{ "schema_version": "chamgap-public-criteria-1.0", "title": "Argentine tango or adapted-tango classes × Improved balance, gait, and participation versus no intervention", "language": "en", "translation_date": "2026-10-21", "criteria_version": "1.0", "criteria_date": "2026-10-06", "condition_origin": "Chamgap's own application conditions", "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." }, "requirements": [ { "item_id": "N01", "question_type": "Evidence condition", "question": "Which question does this evidence check cover?", "needed": "Scope of function and participation versus no intervention and the parent question", "role": "Required", "role_reason": "Material on Scope of function and participation versus no intervention and the parent question is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Scope of function and participation versus no intervention and the parent question must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: It is distinguished from tango superiority over other dance or exercise and is not extended into Parkinson disease recovery or replacement of treatment. This records needed materials; no new research was executed." }, { "item_id": "N02", "question_type": "Evidence condition", "question": "How do selected C and parent C54 differ?", "needed": "Selected grade, absent individual score, and parent grade and score", "role": "Required", "role_reason": "Material on Selected grade, absent individual score, and parent grade and score is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Selected grade, absent individual score, and parent grade and score must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Parent 54 is not assigned as a selected score, and selected C is not labeled as a new review or verdict. This records needed materials; no new research was executed." }, { "item_id": "N03", "question_type": "Evidence condition", "question": "Which materials were actually read in this work?", "needed": "Complete stored parent summary, selected question and external materials", "role": "Required", "role_reason": "Material on Complete stored parent summary, selected question and external materials is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Complete stored parent summary, selected question and external materials must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: External papers, registration, protocols and analysis plans were unread and access was not attempted in this work. This records needed materials; no new research was executed." }, { "item_id": "N04", "question_type": "Evidence condition", "question": "What is the 2009 3-arm report?", "needed": "Hackney and Earhart bibliography, controls and related reports", "role": "Required", "role_reason": "Material on Hackney and Earhart bibliography, controls and related reports is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Hackney and Earhart bibliography, controls and related reports must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: External originals, registration, analysis details and related-report relationships were unread in this work. This records needed materials; no new research was executed." }, { "item_id": "N05", "question_type": "Evidence condition", "question": "What is the 2013 12-month report?", "needed": "Foster and Earhart bibliography, literature identifiers and no-intervention comparison", "role": "Required", "role_reason": "Material on Foster and Earhart bibliography, literature identifiers and no-intervention comparison is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Foster and Earhart bibliography, literature identifiers and no-intervention comparison must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Complete originals, registration and plans, and comparison of related cohorts were unread in this work. This records needed materials; no new research was executed." }, { "item_id": "N06", "question_type": "Evidence condition", "question": "Are shared reports and networks counted as independent replication?", "needed": "Two reports, overlapping research networks, shared questions and participant relationships", "role": "Required", "role_reason": "Material on Two reports, overlapping research networks, shared questions and participant relationships is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Two reports, overlapping research networks, shared questions and participant relationships must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: The same reports are not added as new independent trials or participants; cohort overlap, unique totals and independent replication remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N07", "question_type": "Evidence condition", "question": "Which Parkinson disease population is involved?", "needed": "Severity, stage, age, gait and cognition, and participant selection", "role": "Required", "role_reason": "Material on Severity, stage, age, gait and cognition, and participant selection is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Severity, stage, age, gait and cognition, and participant selection must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Sample size is not converted into an eligibility criterion; stage, medication ON/OFF, freezing, baseline conditions, selection and applicability to other severity levels remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N08", "question_type": "Evidence condition", "question": "Which tango program is involved?", "needed": "Argentine or adapted tango, partners, instructors, setting and progression", "role": "Required", "role_reason": "Material on Argentine or adapted tango, partners, instructors, setting and progression is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Argentine or adapted tango, partners, instructors, setting and progression must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Individual movements, intensity, class length, instructors and partners, progression and adaptation rules, and actual adherence remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N09", "question_type": "Evidence condition", "question": "What were class dose, duration and actual participation?", "needed": "20 classes over 13 weeks for function versus 12 months for participation; actual exposure", "role": "Required", "role_reason": "Material on 20 classes over 13 weeks for function versus 12 months for participation; actual exposure is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on 20 classes over 13 weeks for function versus 12 months for participation; actual exposure must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Actual attendance, class time and intensity, stopping and total exposure are not newly calculated; report-specific differences are retained. This records needed materials; no new research was executed." }, { "item_id": "N10", "question_type": "Evidence condition", "question": "What did the no-intervention comparison mean?", "needed": "Usual medication, rehabilitation, daily activities, social contact and additional exercise", "role": "Required", "role_reason": "Material on Usual medication, rehabilitation, daily activities, social contact and additional exercise is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Usual medication, rehabilitation, daily activities, social contact and additional exercise must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Control-group daily activities, usual rehabilitation and medication, contact time, additional exercise and group-specific changes remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N11", "question_type": "Evidence condition", "question": "What is the context of the 3-arm other-dance comparison?", "needed": "Separate tango, other-dance and no-intervention contrasts; shared control group", "role": "Required", "role_reason": "Material on Separate tango, other-dance and no-intervention contrasts; shared control group is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Separate tango, other-dance and no-intervention contrasts; shared control group must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: The shared no-intervention group is not counted as new participants in two independent comparisons, and program effects are not converted into effects unique to tango movements. This records needed materials; no new research was executed." }, { "item_id": "N12", "question_type": "Evidence condition", "question": "What is established about randomization and lack of masking?", "needed": "Sequence generation, concealment, assessors, baseline balance and program masking", "role": "Required", "role_reason": "Material on Sequence generation, concealment, assessors, baseline balance and program masking is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Sequence generation, concealment, assessors, baseline balance and program masking must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Sequence generation, concealment, assessor masking and baseline balance are not treated as verified from a design label alone. This records needed materials; no new research was executed." }, { "item_id": "N13", "question_type": "Evidence condition", "question": "Which balance and gait endpoints were listed?", "needed": "BBS, 6-minute walk, backward stride, UPDRS, timing and units", "role": "Required", "role_reason": "Material on BBS, 6-minute walk, backward stride, UPDRS, timing and units is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on BBS, 6-minute walk, backward stride, UPDRS, timing and units must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: UPDRS is not newly labeled as the same positive result; test methods, units, baseline and final values, changes, endpoint-specific denominators and hierarchy remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N14", "question_type": "Evidence condition", "question": "What was the exact functional effect versus no intervention?", "needed": "Endpoint-specific between-group estimates, variance, denominators, P values, CIs and important differences", "role": "Required", "role_reason": "Material on Endpoint-specific between-group estimates, variance, denominators, P values, CIs and important differences is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Endpoint-specific between-group estimates, variance, denominators, P values, CIs and important differences must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Exact changes, between-group effects, P values, CIs and important differences are not newly created, and directional wording is not converted into a precise estimate. This records needed materials; no new research was executed." }, { "item_id": "N15", "question_type": "Evidence condition", "question": "How was long-term participation measured?", "needed": "Activity Card Sort, activity retention, definitions, scale and time points", "role": "Required", "role_reason": "Material on Activity Card Sort, activity retention, definitions, scale and time points is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Activity Card Sort, activity retention, definitions, scale and time points must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Units, definitions and calculation of activity retention, response and measurement denominators, masking and time points remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N16", "question_type": "Evidence condition", "question": "What do 77% to 90% and within-group P values mean?", "needed": "Tango and control within-group changes, group-by-time and between-group contrasts", "role": "Required", "role_reason": "Material on Tango and control within-group changes, group-by-time and between-group contrasts is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Tango and control within-group changes, group-by-time and between-group contrasts must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Significant and nonsignificant within-group P values are not compared to create a between-group effect; no new changes or CIs are calculated. This records needed materials; no new research was executed." }, { "item_id": "N17", "question_type": "Evidence condition", "question": "What denominators are 62 randomized, 52 analyzed and 26 per group?", "needed": "Allocation, 10 who did not receive their allocation, analysis groups, endpoints and time points", "role": "Required", "role_reason": "Material on Allocation, 10 who did not receive their allocation, analysis groups, endpoints and time points is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Allocation, 10 who did not receive their allocation, analysis groups, endpoints and time points must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Allocation totals are not converted into completion or measurement denominators, and an exclusion rate for 10 people, original group allocation or time-specific denominators are not newly derived. This records needed materials; no new research was executed." }, { "item_id": "N18", "question_type": "Evidence condition", "question": "How were post-allocation exclusion, missingness and ITT handled?", "needed": "10 nonattenders, exclusion reasons, group missingness, ITT/PP and sensitivity", "role": "Required", "role_reason": "Material on 10 nonattenders, exclusion reasons, group missingness, ITT/PP and sensitivity is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on 10 nonattenders, exclusion reasons, group missingness, ITT/PP and sensitivity must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Reasons, group exclusions, missing participation, ITT/PP, imputation and sensitivity remain unverified. Exclusion information is not used to newly infer durability or safety. This records needed materials; no new research was executed." }, { "item_id": "N19", "question_type": "Evidence condition", "question": "How does the total 58 differ from functional analysis denominators?", "needed": "Total, group- and endpoint-specific allocation, measurement, completion and attrition", "role": "Required", "role_reason": "Material on Total, group- and endpoint-specific allocation, measurement, completion and attrition is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Total, group- and endpoint-specific allocation, measurement, completion and attrition must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Group- and endpoint-specific denominators, attrition, missingness, paired or repeated measurements and adjustment remain unverified; 58 is not established as every endpoint's analysis denominator. This records needed materials; no new research was executed." }, { "item_id": "N20", "question_type": "Evidence condition", "question": "Were preregistration, endpoints, timing and multiplicity verified?", "needed": "Registration, protocols, analysis plans, functional and participation hierarchy, and changes", "role": "Required", "role_reason": "Material on Registration, protocols, analysis plans, functional and participation hierarchy, and changes is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Registration, protocols, analysis plans, functional and participation hierarchy, and changes must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Registration absence is not asserted, and prespecified primary endpoints or multiplicity handling are not newly verified; external plans remain unread. This records needed materials; no new research was executed." }, { "item_id": "N21", "question_type": "Evidence condition", "question": "Are effects versus no intervention unique to tango movements?", "needed": "Music, exercise, group activity, social contact, expectations and the whole program", "role": "Required", "role_reason": "Material on Music, exercise, group activity, social contact, expectations and the whole program is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Music, exercise, group activity, social contact, expectations and the whole program must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Differences are not assigned uniquely to tango movements or superiority over other dance. This records needed materials; no new research was executed." }, { "item_id": "N22", "question_type": "Evidence condition", "question": "What is known about durability, class dose and subgroups?", "needed": "13 weeks versus 12 months, persistence after stopping, frequency and intensity, and prespecified subgroups", "role": "Required", "role_reason": "Material on 13 weeks versus 12 months, persistence after stopping, frequency and intensity, and prespecified subgroups is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on 13 weeks versus 12 months, persistence after stopping, frequency and intensity, and prespecified subgroups must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Long active-control comparisons on the same endpoint, durability after stopping, optimal frequency and intensity, and disease-stage interactions remain unverified. This records needed materials; no new research was executed." }, { "item_id": "N23", "question_type": "Evidence condition", "question": "Do function and participation answer disease recovery or fall prevention?", "needed": "Function and participation, disease progression, actual falls and hospitalization, and treatment replacement", "role": "Required", "role_reason": "Material on Function and participation, disease progression, actual falls and hospitalization, and treatment replacement is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Function and participation, disease progression, actual falls and hospitalization, and treatment replacement must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Balance, gait and participation signals are not transferred into disease reversal, prevention of actual falls or hospitalization, or medication withdrawal. This records needed materials; no new research was executed." }, { "item_id": "N24", "question_type": "Evidence condition", "question": "What are the original funding, network and interest records?", "needed": "NIH, academic support, manufacturer involvement, research teams, institutions, employment and support", "role": "Required", "role_reason": "Material on NIH, academic support, manufacturer involvement, research teams, institutions, employment and support is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on NIH, academic support, manufacturer involvement, research teams, institutions, employment and support must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: These descriptions are not expanded into absence of instructor, institutional, program-rights, nonfinancial-support, author-employment or other interests, or confirmation of independent replication. This records needed materials; no new research was executed." }, { "item_id": "N25", "question_type": "Evidence condition", "question": "How were harms during classes collected?", "needed": "Falls, injuries, collection, stopping, participation and time denominators, and control events", "role": "Supplementary", "role_reason": "Material on Falls, injuries, collection, stopping, participation and time denominators, and control events is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Falls, injuries, collection, stopping, participation and time denominators, and control events must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Trial-specific event collection, injuries and falls, stopping, exposure and time denominators remain unverified. Functional improvement does not establish fewer actual falls or program safety. This records needed materials; no new research was executed." }, { "item_id": "N26", "question_type": "Evidence condition", "question": "How do partners, setting and medication relate to harms?", "needed": "Turns and backward walking, instructors and partners, setting, baseline conditions, medication and timelines", "role": "Supplementary", "role_reason": "Material on Turns and backward walking, instructors and partners, setting, baseline conditions, medication and timelines is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Turns and backward walking, instructors and partners, setting, baseline conditions, medication and timelines must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Actual compliance with trial settings, specific causes and between-group risks, stopping and recovery, and absence of long-term or rare harms remain unverified. No new causality or incidence rates are created. This records needed materials; no new research was executed." }, { "item_id": "N27", "question_type": "Evidence condition", "question": "What do selected and parent bilingual records, axes, dates and empty fields mean?", "needed": "Selected C, absent score, parent C54, axes, 2026-09-07 and correction history", "role": "Required", "role_reason": "Material on Selected C, absent score, parent C54, axes, 2026-09-07 and correction history is needed to connect the same tango program, population, no-intervention control, endpoint, duration, denominators, precision and harms.", "application_exception": "Selected C and absent individual score and axes are retained, distinguishing parent C54 and other-dance-specific superiority D. No-intervention program effects are not converted into effects unique to tango movements, or within-group P values into between-group effects. Allocation, analysis, exclusions and activity-retention proportions are not newly calculated. No new effects, CIs, denominators, unique totals, grades or individual-care guidance are created.", "criterion": "Original material on Selected C, absent score, parent C54, axes, 2026-09-07 and correction history must link to the same question, control, endpoint, time point and denominators, distinguishing within- and between-group results, parent context and unread external materials.", "basis": "Preserved principles distinguishing questions, direct comparisons, reports and trials, endpoints, denominators, precision and harms informed production.", "condition_origin": "These are evidence conditions for the existing balance, gait and participation question versus no intervention. They do not establish preregistration, execution of an official assessment tool or completed clinical content review.", "proposed_research": "Material needed: Historical cross-checking and parent I2/R1 are not inherited as selected axes, new review or independent clinical certification. New literature, registration and retraction searches were not performed. This records needed materials; no new research was executed." } ] }