{ "schema_version": "chamgap-public-evidence-check-1.0", "public_id": "v3020-s0", "verdict_number": "3020", "title": "Oral vitamin C × first gout diagnosis in men without gout", "view_version": "1.0", "view_created_date": "2026-10-22", "criteria_version": "1.0", "criteria_date": "2026-10-06", "review_date": null, "legacy_evidence_date": "2026-09-07", "review_scope": { "materials_read": "Existing review summaries and stored records of methodological application", "clinical_papers_directly_read": false, "new_clinical_search": false, "limitation": "Existing stored summary and preserved methodology application records. External papers, abstracts, registration, protocols, SAPs, original result tables and support disclosures are unread, and review of existing content remains incomplete.", "date_meaning": "This is the date the stored materials were checked, not the date of a new search of the clinical literature." }, "claim_context": { "population": "This concerns the analysis of men without prior gout. The original PHS II involved male physicians≥50 years; its full cohort included6.5% with prior gout and is distinguished from the prior-gout-excluded analysis.", "intervention": "The parent’s oral single-ingredient ascorbic acid context is retained. Exact product, tablet/capsule, salt, excipients and actual exposure in the selected analysis remain unverified. Foods, combinations and intravenous infusion are not automatically included.", "dose": "The exact dose for the selected PHS II analysis is absent from this stored account. The parent’s not-applicable dose for absent eligible recurrent-flare studies is not transferred to this question or filled using external knowledge.", "comparator": "C versus placebo in the original factorial trial is distinguished from full allocation and the prior-gout-excluded analysis. Other factors, drugs, additional supplementation, adherence and crossover details remain unverified; this is not a standard gout-drug replacement trial.", "endpoint": "This is a post hoc analysis of annually self-reported first gout diagnoses. It is distinguished from actual attack frequency, recurrence and urate reduction. First-event ascertainment, clinical confirmation and date-imputation details remain unverified.", "duration": "The account describes a long-term factorial trial and annual diagnosis reports. Exact dosing, follow-up, person-year denominators, exposure changes and post-stopping follow-up remain unverified in this stored account.", "excluded_extensions": [ "The selected D30 verdict is retained. The parent verdict on recurrent-flare prevention in established gout is deferred with an empty score; parent assessment axes are not inherited by the selected question.", "The prior-gout-excluded262/6865 versus290/6823, HR0.90(95%CI0.76–1.07),P=.23 and rates4.8 versus5.4/1000 person-years are retained. Nonsignificance is not relabeled as an effect of 0 or equivalence, and no new effect, interval or person-years are calculated.", "The full-cohort454/7329 versus517/7312, HR0.88(95%CI0.77–0.99),P=.04 is separate context including prior gout. It does not replace the selected analysis’s uncertain result, and the analyses are not summed as independent trials or new participants.", "Exposure allocation in the original randomized double-blind factorial trial is distinguished from the post hoc gout outcome. NCT00270647 for the original cardiovascular/cancer trial does not establish gout prespecification or reading of the official registration history.", "The parent’s no-human-study indicator is true, while its narrative says it should be false because human studies exist. This disagreement is preserved without correction or inheritance by the selected question in this production.", "First diagnosis reports, recurrent attacks in established gout, serum urate and replacement of standard medication are separate questions. Existing caution for high oral doses, gastrointestinal effects, stone risk, kidney disease and iron overload is retained without new safety conclusions, incidence estimates or individual dosing guidance." ] }, "requirements": [ { "item_id": "N01", "question_type": "Evidence condition", "question": "What is the selected question?", "needed": "Existing subclaim and verdict record, and the parent-question boundary", "role": "Required", "role_reason": "Material on Existing subclaim and verdict record, and the parent-question boundary is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Existing subclaim and verdict record, and the parent-question boundary must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The parent question on recurrent-flare prevention in established gout is not repurposed as this question or made into a new claim. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The selected wording is “First gout diagnosis in men without gout.” The existing subclaim is linked separately from its verdict record.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The parent question on recurrent-flare prevention in established gout is not repurposed as this question or made into a new claim.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The parent question on recurrent-flare prevention in established gout is not repurposed as this question or made into a new claim." }, { "item_id": "N02", "question_type": "Evidence condition", "question": "What do selected D30 and parent deferral mean?", "needed": "Distinguishing selected D30 from parent deferral and empty score", "role": "Required", "role_reason": "Material on Distinguishing selected D30 from parent deferral and empty score is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Distinguishing selected D30 from parent deferral and empty score must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The verdicts are not overwritten by each other or changed into a new verdict or fulfilled condition. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The selected D·30 score is retained. The parent verdict is deferred with an empty score and unscored evidence axes.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The verdicts are not overwritten by each other or changed into a new verdict or fulfilled condition.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The verdicts are not overwritten by each other or changed into a new verdict or fulfilled condition." }, { "item_id": "N03", "question_type": "Evidence condition", "question": "What materials were read in this work?", "needed": "Complete parent summary, subclaims, historical checks and unread external materials", "role": "Required", "role_reason": "Material on Complete parent summary, subclaims, historical checks and unread external materials is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Complete parent summary, subclaims, historical checks and unread external materials must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: External abstracts, full text, registration, protocols and analysis plans are unread and access was not attempted. Historical checks are not inherited as current content review. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The complete Korean and English parent summary, 1 evidence entry, 2 citations and 2 subclaims were read. Historical indexed full-text, table, funding and independent-comparison flags are retained as history.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "External abstracts, full text, registration, protocols and analysis plans are unread and access was not attempted. Historical checks are not inherited as current content review.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "External abstracts, full text, registration, protocols and analysis plans are unread and access was not attempted. Historical checks are not inherited as current content review." }, { "item_id": "N04", "question_type": "Evidence condition", "question": "What is the post hoc PHS II report?", "needed": "Juraschek2022, PMID/PMCID/DOI and original-trial registration", "role": "Required", "role_reason": "Material on Juraschek2022, PMID/PMCID/DOI and original-trial registration is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Juraschek2022, PMID/PMCID/DOI and original-trial registration must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The identifier belongs to the original cardiovascular/cancer trial. Gout prespecification is unverified; the original text and registration remain unread in this work. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The post hoc PHS II gout analysis in Am J Clin Nutr2022, PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 is retained.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The identifier belongs to the original cardiovascular/cancer trial. Gout prespecification is unverified; the original text and registration remain unread in this work.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The identifier belongs to the original cardiovascular/cancer trial. Gout prespecification is unverified; the original text and registration remain unread in this work." }, { "item_id": "N05", "question_type": "Evidence condition", "question": "Are the original trial and subgroup analyses counted twice?", "needed": "Original factorial trial, full-cohort and prior-gout-excluded analyses, and shared participants", "role": "Required", "role_reason": "Material on Original factorial trial, full-cohort and prior-gout-excluded analyses, and shared participants is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Original factorial trial, full-cohort and prior-gout-excluded analyses, and shared participants must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: They are not added as independent trials or new participants. Unique trial, participant and replication totals remain unverified. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The full-cohort and prior-gout-excluded analyses are different analyses of the same PHS II data.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "They are not added as independent trials or new participants. Unique trial, participant and replication totals remain unverified.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "They are not added as independent trials or new participants. Unique trial, participant and replication totals remain unverified." }, { "item_id": "N06", "question_type": "Evidence condition", "question": "Who are the men without prior gout?", "needed": "Male physicians≥50 years, prior-gout exclusion, selection and baseline", "role": "Required", "role_reason": "Material on Male physicians≥50 years, prior-gout exclusion, selection and baseline is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Male physicians≥50 years, prior-gout exclusion, selection and baseline must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Results are not extended to women, the general population or recurrent attacks in established gout. History ascertainment, detailed selection and baseline balance remain unverified. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The original trial involved male physicians≥50 years; its full cohort included6.5% with prior gout. The selected question uses the prior-gout-excluded analysis.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Results are not extended to women, the general population or recurrent attacks in established gout. History ascertainment, detailed selection and baseline balance remain unverified.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Results are not extended to women, the general population or recurrent attacks in established gout. History ascertainment, detailed selection and baseline balance remain unverified." }, { "item_id": "N07", "question_type": "Evidence condition", "question": "Are full-cohort diagnosis reports the same as first diagnoses?", "needed": "Event definitions in the full cohort including prior gout and the prior-gout-excluded analysis", "role": "Required", "role_reason": "Material on Event definitions in the full cohort including prior gout and the prior-gout-excluded analysis is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Event definitions in the full cohort including prior gout and the prior-gout-excluded analysis must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The positive full-cohort HR is not repurposed as the selected first-diagnosis effect. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The existing explanation is retained: relabeling full-cohort new-diagnosis reports as first onset without prior gout or recurrent attacks changes the event definition.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The positive full-cohort HR is not repurposed as the selected first-diagnosis effect.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The positive full-cohort HR is not repurposed as the selected first-diagnosis effect." }, { "item_id": "N08", "question_type": "Evidence condition", "question": "What is the selected analysis result?", "needed": "Prior-gout-excluded events, denominators, HR,95%CI, P and rates", "role": "Required", "role_reason": "Material on Prior-gout-excluded events, denominators, HR,95%CI, P and rates is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Prior-gout-excluded events, denominators, HR,95%CI, P and rates must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: No new incidence rate, HR, difference or CI is calculated. Nonsignificance is not judged as an effect of0 or equivalence. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Prior-gout-excluded262/6865 versus290/6823; HR0.90(95%CI0.76–1.07),P=.23; rates4.8 versus5.4/1000 person-years are retained.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "No new incidence rate, HR, difference or CI is calculated. Nonsignificance is not judged as an effect of0 or equivalence.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "No new incidence rate, HR, difference or CI is calculated. Nonsignificance is not judged as an effect of0 or equivalence." }, { "item_id": "N09", "question_type": "Evidence condition", "question": "Which analysis produced the positive full-cohort result?", "needed": "Full-cohort454/7329 versus517/7312, HR, P and inclusion of prior gout", "role": "Required", "role_reason": "Material on Full-cohort454/7329 versus517/7312, HR, P and inclusion of prior gout is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Full-cohort454/7329 versus517/7312, HR, P and inclusion of prior gout must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The positive full-cohort result including prior gout does not replace uncertainty in the selected analysis or establish attack prevention in established gout. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Full-cohort454/7329 versus517/7312; HR0.88(95%CI0.77–0.99),P=.04 is retained as separate analysis context.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The positive full-cohort result including prior gout does not replace uncertainty in the selected analysis or establish attack prevention in established gout.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The positive full-cohort result including prior gout does not replace uncertainty in the selected analysis or establish attack prevention in established gout." }, { "item_id": "N10", "question_type": "Evidence condition", "question": "What does self-reported diagnosis measure?", "needed": "Annual diagnosis reports, first-event ascertainment and date imputation", "role": "Required", "role_reason": "Material on Annual diagnosis reports, first-event ascertainment and date imputation is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Annual diagnosis reports, first-event ascertainment and date imputation must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Medical records, classification criteria, first-diagnosis ascertainment, missing reports, imputation methods and group-specific measurement differences remain unverified. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Gout was a post hoc question concerning annual diagnosis reports, not attack frequency. Existing self-report and date-imputation limitations are retained.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Medical records, classification criteria, first-diagnosis ascertainment, missing reports, imputation methods and group-specific measurement differences remain unverified.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Medical records, classification criteria, first-diagnosis ascertainment, missing reports, imputation methods and group-specific measurement differences remain unverified." }, { "item_id": "N11", "question_type": "Evidence condition", "question": "Are randomized allocation and the post hoc outcome distinguished?", "needed": "Original factorial trial, exposure allocation, post hoc gout outcome and selection", "role": "Required", "role_reason": "Material on Original factorial trial, exposure allocation, post hoc gout outcome and selection is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Original factorial trial, exposure allocation, post hoc gout outcome and selection must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Randomized exposure is not elevated to a prespecified primary gout outcome or confirmatory prevention trial. Details of post hoc analysis and selection remain unverified. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Data from the original randomized double-blind factorial trial were analysed post hoc for gout.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Randomized exposure is not elevated to a prespecified primary gout outcome or confirmatory prevention trial. Details of post hoc analysis and selection remain unverified.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Randomized exposure is not elevated to a prespecified primary gout outcome or confirmatory prevention trial. Details of post hoc analysis and selection remain unverified." }, { "item_id": "N12", "question_type": "Evidence condition", "question": "What are the oral formulation and actual dose?", "needed": "Oral C product, dose, ingredients and actual exposure in the selected analysis", "role": "Required", "role_reason": "Material on Oral C product, dose, ingredients and actual exposure in the selected analysis is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Oral C product, dose, ingredients and actual exposure in the selected analysis must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The parent’s not-applicable dose for absent eligible studies is not transferred to this question or filled using external knowledge. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The parent’s general oral single-ingredient ascorbic acid context is retained. This stored account lacks exact PHS II dose and product details.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The parent’s not-applicable dose for absent eligible studies is not transferred to this question or filled using external knowledge.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The parent’s not-applicable dose for absent eligible studies is not transferred to this question or filled using external knowledge." }, { "item_id": "N13", "question_type": "Evidence condition", "question": "What is known about dosing, follow-up and person-years?", "needed": "Long-term factorial trial, annual reports, exact exposure, follow-up and attrition", "role": "Required", "role_reason": "Material on Long-term factorial trial, annual reports, exact exposure, follow-up and attrition is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Long-term factorial trial, annual reports, exact exposure, follow-up and attrition must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Exact dosing and follow-up duration, person-year denominators, exposure changes, stopping and date-imputation details remain unverified. The parent’s not-applicable duration is not transferred here. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The existing account describes a long-term factorial trial of male physicians and annual diagnosis reports.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Exact dosing and follow-up duration, person-year denominators, exposure changes, stopping and date-imputation details remain unverified. The parent’s not-applicable duration is not transferred here.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Exact dosing and follow-up duration, person-year denominators, exposure changes, stopping and date-imputation details remain unverified. The parent’s not-applicable duration is not transferred here." }, { "item_id": "N14", "question_type": "Evidence condition", "question": "What comparisons involve placebo and concurrent factorial interventions?", "needed": "C, placebo, concurrent randomized factors, adherence, drugs and additional supplements", "role": "Required", "role_reason": "Material on C, placebo, concurrent randomized factors, adherence, drugs and additional supplements is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on C, placebo, concurrent randomized factors, adherence, drugs and additional supplements must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Other factors, drugs, diet, supplements, urate medication, adherence, crossover and adjustment remain unverified. This is not a standard gout-drug replacement trial. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The original PHS II was a double-blind factorial trial; C7329/placebo7312 allocation is retained.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Other factors, drugs, diet, supplements, urate medication, adherence, crossover and adjustment remain unverified. This is not a standard gout-drug replacement trial.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Other factors, drugs, diet, supplements, urate medication, adherence, crossover and adjustment remain unverified. This is not a standard gout-drug replacement trial." }, { "item_id": "N15", "question_type": "Evidence condition", "question": "What are the selected denominators, missingness and censoring?", "needed": "Total14641, allocation, prior-gout-excluded6865/6823, events and analysis", "role": "Required", "role_reason": "Material on Total14641, allocation, prior-gout-excluded6865/6823, events and analysis is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Total14641, allocation, prior-gout-excluded6865/6823, events and analysis must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Subgroup denominators are not relabeled as new allocation. Exclusion, missingness, annual responses, censoring and ITT/PP remain unverified. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Total14,641, C7329/placebo7312 and prior-gout-excluded6865/6823 are retained separately.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Subgroup denominators are not relabeled as new allocation. Exclusion, missingness, annual responses, censoring and ITT/PP remain unverified.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Subgroup denominators are not relabeled as new allocation. Exclusion, missingness, annual responses, censoring and ITT/PP remain unverified." }, { "item_id": "N16", "question_type": "Evidence condition", "question": "What are the HR model and clinically important effect?", "needed": "Adjustment, time, proportional hazards, original95%CI and important difference", "role": "Required", "role_reason": "Material on Adjustment, time, proportional hazards, original95%CI and important difference is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Adjustment, time, proportional hazards, original95%CI and important difference must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Exact model, adjustment, proportional hazards, clinically important difference and power are not newly verified or calculated. This is not converted into complete absence of effect. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The selected prior-gout-excluded HR0.90 has a95%CI0.76–1.07 including the null.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Exact model, adjustment, proportional hazards, clinically important difference and power are not newly verified or calculated. This is not converted into complete absence of effect.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Exact model, adjustment, proportional hazards, clinically important difference and power are not newly verified or calculated. This is not converted into complete absence of effect." }, { "item_id": "N17", "question_type": "Evidence condition", "question": "Was the gout outcome preregistered?", "needed": "Original NCT00270647 trial, cardiovascular/cancer outcomes, gout prespecification and analysis plans", "role": "Required", "role_reason": "Material on Original NCT00270647 trial, cardiovascular/cancer outcomes, gout prespecification and analysis plans is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Original NCT00270647 trial, cardiovascular/cancer outcomes, gout prespecification and analysis plans must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The identifier alone does not establish a prespecified prevention outcome or fulfilled analysis condition. Registration, protocols and analysis plans remain unread in this work. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The original trial’s main questions were cardiovascular disease/cancer; gout was analysed post hoc. Gout prespecification in the registration remains unverified.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The identifier alone does not establish a prespecified prevention outcome or fulfilled analysis condition. Registration, protocols and analysis plans remain unread in this work.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The identifier alone does not establish a prespecified prevention outcome or fulfilled analysis condition. Registration, protocols and analysis plans remain unread in this work." }, { "item_id": "N18", "question_type": "Evidence condition", "question": "Is the chronic-gout review direct evidence for this question?", "needed": "Citation-only Cochrane2021, unmeasured attacks and population differences", "role": "Required", "role_reason": "Material on Citation-only Cochrane2021, unmeasured attacks and population differences is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Citation-only Cochrane2021, unmeasured attacks and population differences must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: The review is not repurposed as a new direct trial, new participants or a urate value for first diagnosis in men without gout. This records needed materials; no new research was executed.", "current_reports": [ "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Dietary interventions for chronic gout2021, PMID34767649, is parent bibliographic context recording that vitamin C trials did not measure attack frequency.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "The review is not repurposed as a new direct trial, new participants or a urate value for first diagnosis in men without gout.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "The review is not repurposed as a new direct trial, new participants or a urate value for first diagnosis in men without gout." }, { "item_id": "N19", "question_type": "Evidence condition", "question": "Are independent replication and the3019 urate verdict distinguished?", "needed": "PHS II subgroup analyses, the separate3019 surrogate and report relationships", "role": "Required", "role_reason": "Material on PHS II subgroup analyses, the separate3019 surrogate and report relationships is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on PHS II subgroup analyses, the separate3019 surrogate and report relationships must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Trials, reports and participants from other verdicts are not combined. Unique clinical totals and independent replication for the selected question remain unverified. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The parent explanation not to import the3019 urate grade is retained. Full-cohort and excluded PHS II analyses are not independent replication.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Trials, reports and participants from other verdicts are not combined. Unique clinical totals and independent replication for the selected question remain unverified.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Trials, reports and participants from other verdicts are not combined. Unique clinical totals and independent replication for the selected question remain unverified." }, { "item_id": "N20", "question_type": "Evidence condition", "question": "What can be extended across history, sex, dose and duration?", "needed": "Prior-gout exclusion, male physicians, prespecified subgroups, interactions and other doses", "role": "Required", "role_reason": "Material on Prior-gout exclusion, male physicians, prespecified subgroups, interactions and other doses is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Prior-gout exclusion, male physicians, prespecified subgroups, interactions and other doses must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: No new generalization is made to women, the general population, established gout, other doses, sustained prevention or subgroup interactions. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The selected population is men without prior gout; the original analysis involved male physicians≥50 years.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "No new generalization is made to women, the general population, established gout, other doses, sustained prevention or subgroup interactions.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "No new generalization is made to women, the general population, established gout, other doses, sustained prevention or subgroup interactions." }, { "item_id": "N21", "question_type": "Evidence condition", "question": "Are diagnoses, attacks, urate and drug replacement different questions?", "needed": "Selected diagnoses, clinical attacks, surrogate outcomes and standard-drug replacement", "role": "Required", "role_reason": "Material on Selected diagnoses, clinical attacks, surrogate outcomes and standard-drug replacement is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Selected diagnoses, clinical attacks, surrogate outcomes and standard-drug replacement must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: First-diagnosis reports are not repurposed as direct attack frequency, urate reduction or replacement of treatment for established gout. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The existing account explains that urate reduction, attack prevention and standard-drug replacement each require separate evidence.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "First-diagnosis reports are not repurposed as direct attack frequency, urate reduction or replacement of treatment for established gout.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "First-diagnosis reports are not repurposed as direct attack frequency, urate reduction or replacement of treatment for established gout." }, { "item_id": "N22", "question_type": "Evidence condition", "question": "What is known about NIH and industry study-agent support?", "needed": "NIH, BASF/Pfizer/DSM, study agents, packaging, employment and interests", "role": "Required", "role_reason": "Material on NIH, BASF/Pfizer/DSM, study agents, packaging, employment and interests is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on NIH, BASF/Pfizer/DSM, study agents, packaging, employment and interests must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Funding and product support alone do not verify employee authorship, patents, interests, absence of bias or new independent certification. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The existing account of NIH and BASF/Pfizer/DSM study-agent and packaging support→I1 is retained.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Funding and product support alone do not verify employee authorship, patents, interests, absence of bias or new independent certification.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Funding and product support alone do not verify employee authorship, patents, interests, absence of bias or new independent certification." }, { "item_id": "N23", "question_type": "Evidence condition", "question": "How were oral C harms actually collected?", "needed": "Events, collection, stopping, denominators and duration for the selected exposure", "role": "Supplementary", "role_reason": "Material on Events, collection, stopping, denominators and duration for the selected exposure is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Events, collection, stopping, denominators and duration for the selected exposure must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Group-specific harms, stopping, exposure denominators and collection in PHS II and the selected analysis remain unverified. Diagnosis results are not used to judge safety. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The parent’s caution, high-dose oral gastrointestinal effects and limited event-count wording are retained as context.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Group-specific harms, stopping, exposure denominators and collection in PHS II and the selected analysis remain unverified. Diagnosis results are not used to judge safety.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Group-specific harms, stopping, exposure denominators and collection in PHS II and the selected analysis remain unverified. Diagnosis results are not used to judge safety." }, { "item_id": "N24", "question_type": "Evidence condition", "question": "What is known about concomitant exposures, predisposition and long-term harms?", "needed": "Kidney disease, stones, iron overload, concurrent factors, drugs, timelines, long-term and rare events", "role": "Supplementary", "role_reason": "Material on Kidney disease, stones, iron overload, concurrent factors, drugs, timelines, long-term and rare events is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Kidney disease, stones, iron overload, concurrent factors, drugs, timelines, long-term and rare events must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Specific interactions, between-group risks, causality, recovery after stopping and absence of long-term or rare harms remain unverified. No new incidence rate or verdict is created. This records needed materials; no new research was executed.", "current_reports": [ "S01" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Existing oral caution and the boundaries of product and baseline predisposition are retained.", "condition_status": "Unverified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Specific interactions, between-group risks, causality, recovery after stopping and absence of long-term or rare harms remain unverified. No new incidence rate or verdict is created.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Specific interactions, between-group risks, causality, recovery after stopping and absence of long-term or rare harms remain unverified. No new incidence rate or verdict is created." }, { "item_id": "N25", "question_type": "Evidence condition", "question": "Do the parent’s human-study indicator and narrative agree?", "needed": "Disagreement between parent indicator and narrative, and absent selected-subclaim axes", "role": "Required", "role_reason": "Material on Disagreement between parent indicator and narrative, and absent selected-subclaim axes is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Disagreement between parent indicator and narrative, and absent selected-subclaim axes must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Neither is corrected as the right answer or inherited as a selected-subclaim axis in this production. Parent axes remain separate from selected D30. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "The parent’s no-human-study indicator is enabled, while its narrative says human studies exist and the indicator should be disabled. Both original records are retained.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Neither is corrected as the right answer or inherited as a selected-subclaim axis in this production. Parent axes remain separate from selected D30.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Neither is corrected as the right answer or inherited as a selected-subclaim axis in this production. Parent axes remain separate from selected D30." }, { "item_id": "N26", "question_type": "Evidence condition", "question": "What do Korean/English text, parent dates and empty corrections mean?", "needed": "Korean/English subclaim text, parent account,2026-09-07 and historical records", "role": "Required", "role_reason": "Material on Korean/English subclaim text, parent account,2026-09-07 and historical records is needed to connect prior history, sex, oral exposure, comparisons, first diagnosis reports, denominators, precision and harms.", "application_exception": "The existing selected D30 verdict is preserved separately from the parent’s deferred verdict, empty score and assessment axes. Full-cohort and prior-gout-excluded analyses, first diagnoses, recurrent attacks and urate are distinguished. No new incidence rates, effects, intervals, person-years, participant totals or dosing guidance are created.", "criterion": "Original records on Korean/English subclaim text, parent account,2026-09-07 and historical records must link to the same population, exposure, comparison, event, time point and denominator, distinguishing full-cohort and prior-gout-excluded analyses and diagnoses from attacks.", "basis": "Existing principles distinguish questions, direct comparisons, reports and trials, populations and events, denominators, precision and harms.", "condition_origin": "These evidence conditions concern the existing question of oral single-ingredient vitamin C and first gout diagnosis in men without gout. They do not establish new preregistration, official assessment or independent clinical validation.", "proposed_research": "Material needed: Historical independent checks and the original verdict date are not inherited as current content review or new literature reading. Empty corrections do not establish integrity of all literature. This records needed materials; no new research was executed.", "current_reports": [ "S01", "S02" ], "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Existing Korean and English review summary, question and bibliography read; external abstracts, full text, registration, protocols and analysis plans unread", "observation": "Selected Korean/English wording and D30, parent deferral, empty score, Korean/English text,2026-09-07 and empty correction/deliberation records are retained. Production date is distinguished from completed content review.", "condition_status": "Partly verified", "status_reason": "This state links partial information and gaps in the existing stored summary. External verification and clinical content review remain incomplete; it does not certify fulfilled conditions, efficacy, safety, prespecification or independence.", "missingness": "Historical independent checks and the original verdict date are not inherited as current content review or new literature reading. Empty corrections do not establish integrity of all literature.", "uncertainty": "Exact dose, formulation, actual exposure, dosing and follow-up, event ascertainment, self-report, date imputation, missingness, censoring, models, prespecification, replication and harm details remain unverified. Historical accounts are not converted into external reading or completed clinical review in this work.", "review_date": null, "reading_status": "Full text not read · Stored summary read", "additional_material": "Historical independent checks and the original verdict date are not inherited as current content review or new literature reading. Empty corrections do not establish integrity of all literature." } ], "reports": [ { "report_id": "S01", "title": "Juraschek et al. 2022 · post hoc PHS II gout analysis", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC9437983/", "report_type": "Post hoc analysis of a randomized double-blind factorial trial; the selected question uses the prior-gout-excluded analysis", "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Stored summary read; external materials unread", "study_family": "TF3020-PHSII", "independent_replication": null, "observed_result": "Selected prior-gout-excluded262/6865 versus290/6823; HR0.90(95%CI0.76–1.07),P=.23; rates4.8 versus5.4/1000 person-years. Full-cohort454/7329 versus517/7312; HR0.88(95%CI0.77–0.99),P=.04 is separate context.", "result_level": "Original total14,641, C7329/placebo7312, male physicians≥50 years and6.5% prior gout are distinguished from the prior-gout-excluded6865/6823. Annual self-reported diagnoses, date imputation and post hoc selection have limitations; exact dose, duration, model and harm details remain unverified.", "source_evidence_date": "2026-09-07", "materials": [ { "material_type": "Stored existing review summary", "public_status": "Preserved copy of the complete existing review summary", "access_status": "Stored summary", "acquired": true, "actually_read": "Summary read", "as_of": "2026-09-07", "qualification": "PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 are retained. The registration identifier is an original-trial citation record; official gout prespecification and current original-text reading remain unverified. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "External paper", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 are retained. The registration identifier is an original-trial citation record; official gout prespecification and current original-text reading remain unverified. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Registration material", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 are retained. The registration identifier is an original-trial citation record; official gout prespecification and current original-text reading remain unverified. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Protocol", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 are retained. The registration identifier is an original-trial citation record; official gout prespecification and current original-text reading remain unverified. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Statistical analysis plan", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 are retained. The registration identifier is an original-trial citation record; official gout prespecification and current original-text reading remain unverified. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Funding, product support and COI material", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "PMID35575611, PMCIDPMC9437983, DOI10.1093/ajcn/nqac140 and NCT00270647 are retained. The registration identifier is an original-trial citation record; official gout prespecification and current original-text reading remain unverified. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." } ], "links": [ { "label": "Official source", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC9437983/" } ] }, { "report_id": "S02", "title": "Dietary interventions for chronic gout · Cochrane 2021", "url": "https://pubmed.ncbi.nlm.nih.gov/34767649/", "report_type": "Citation-only systematic review of chronic gout; not a direct trial for the selected question", "existence": "Displayed reports, bibliography, results and gaps exist in the stored summary. External availability, acquisition, content and reading of detailed materials remain separately unverified.", "acquired_read": "Stored summary read; external materials unread", "study_family": "SYN3020-CHRONICGOUT", "independent_replication": null, "observed_result": "The existing citation records that the vitamin C trials did not measure gout-attack frequency.", "result_level": "This is parent flare-verdict bibliographic context, PMID34767649. It is not repurposed as a new direct trial, new participants or a urate value for first diagnosis in men without gout.", "source_evidence_date": "2026-09-07", "materials": [ { "material_type": "Stored existing review summary", "public_status": "Preserved copy of the complete existing review summary", "access_status": "Stored summary", "acquired": true, "actually_read": "Summary read", "as_of": "2026-09-07", "qualification": "This is the existing bibliography for PMID34767649. External abstracts, full text and review inclusion/extraction materials are unread; it is not elevated to direct first-diagnosis evidence. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "External paper", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "This is the existing bibliography for PMID34767649. External abstracts, full text and review inclusion/extraction materials are unread; it is not elevated to direct first-diagnosis evidence. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Registration material", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "This is the existing bibliography for PMID34767649. External abstracts, full text and review inclusion/extraction materials are unread; it is not elevated to direct first-diagnosis evidence. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Protocol", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "This is the existing bibliography for PMID34767649. External abstracts, full text and review inclusion/extraction materials are unread; it is not elevated to direct first-diagnosis evidence. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Statistical analysis plan", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "This is the existing bibliography for PMID34767649. External abstracts, full text and review inclusion/extraction materials are unread; it is not elevated to direct first-diagnosis evidence. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." }, { "material_type": "Funding, product support and COI material", "public_status": "Original bibliographic link or needed material; external public availability/access status unverified", "access_status": "Unread; access not attempted", "acquired": false, "actually_read": "Not read", "as_of": "2026-09-07", "qualification": "This is the existing bibliography for PMID34767649. External abstracts, full text and review inclusion/extraction materials are unread; it is not elevated to direct first-diagnosis evidence. Dates for all material slots are the original record’s historical evidence date. Unread external slots retain the same historical date, which is not presented as current external reading." } ], "links": [ { "label": "PubMed", "url": "https://pubmed.ncbi.nlm.nih.gov/34767649/" } ] } ], "method_sources": [ { "id": "M03", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2023-08", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-03", "section": "§3.1, §3.2.1–3.2.3, MECIR C5/C7/C13", "official_principle": "Clearly record the question, eligibility conditions and reasons for changes, and distinguish variations in interventions.", "review_level": "Existing methodological links were reused for production. External originals were not reread and methodological content was not reassessed." }, { "id": "M04", "version": "Cochrane Handbook 6.5.1 (2025), chapter updated 2025-03", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-04", "section": "§4.5, §4.6.1–4.6.3, MECIR C42", "official_principle": "Distinguish studies from reports and link them; do not omit a study solely because results are unreported.", "review_level": "Existing methodological links were reused for production. External originals were not reread and methodological content was not reassessed." }, { "id": "M08", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2019-10", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-08", "section": "§8.1–8.2.3, Table 8.2.a", "official_principle": "Define the outcome and effect of interest, then examine randomization, deviations, missing data, measurement and selective reporting.", "review_level": "Existing methodological links were reused for production. External originals were not reread and methodological content was not reassessed." }, { "id": "M15", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2023-08", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-15", "section": "§15.2.4, §15.3.1–15.3.3", "official_principle": "Distinguish effect estimates, intervals, importance and applicability. Sample size alone does not determine precision.", "review_level": "Existing methodological links were reused for production. External originals were not reread and methodological content was not reassessed." }, { "id": "M19", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2019-10", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-19", "section": "§19.1.2, §19.2.1–19.2.4", "official_principle": "Harm questions may require different designs, populations and follow-up from efficacy questions. Case reports do not establish incidence rates.", "review_level": "Existing methodological links were reused for production. External originals were not reread and methodological content was not reassessed." } ], "status_dictionary": { "Partly verified": "Partial information from the stored summary is linked; detailed originals and content review remain incomplete.", "Unverified": "Required details cannot be established within the preserved scope. This does not establish absence of effects or studies, or safety.", "Review incomplete": "Review of existing content remains incomplete.", "Met": "This state is used only within the relevant conditions after material verification and content review. It was not automatically assigned in this work.", "Not reported": "Unreported within material actually read. Unread external material is not relabeled as unreported.", "Inaccessible": "This means actual access failure. External access was not attempted in this work, so this state was not assigned.", "Not applicable": "Used only with an application exception and reason based on the question scope.", "Conflicting data": "This requires actual comparison of materials; no new conflict judgment was made in this work.", "Insufficient evidence for the conditions": "This indicates gaps in additional material for the selected conditions. Unread material as a whole is not converted into an efficacy grade." }, "study_overlap": { "state": "Unverified", "unique_trial_count": null, "unique_participant_count": null, "reason": "The full-cohort and prior-gout-excluded PHS II results are analyses of the same original factorial trial, not independent replications. The chronic-gout review is distinguished as parent bibliographic context. Unique trial, participant and replication totals remain unverified." }, "history": [ { "date": "2026-10-22", "kind": "Separation of public-facing pages and materials", "view_version": "1.0", "change": "Public-facing views and materials were prepared from the existing 26 items. No new clinical search, verification-status change or scoring was performed." } ], "language": "en", "translation_date": "2026-10-22" }