Physio Outcome Measures

Mandatory first reads

Read safety core and measurement selection method. Do not administer or recommend a performance/special test before checking medical stability, falls risk, environment, supervision, and stop criteria.

Choose the pathway first

• Measure status or change: PROM, ClinROM, or performance test → COSMIN pathway.
• Update probability of a target condition: diagnostic special/index test → diagnostic-accuracy pathway.
• Estimate a future outcome: prognostic factor/model → prognostic-model pathway.

Do not combine these into one “validity score.” A special test modifies probability; it does not independently rule serious disease in or out.

Selection workflow

1. Define the construct precisely. Replace broad labels such as “pain” with intensity, interference, catastrophizing, self-efficacy, activity limitation, or another intended construct.
2. Define purpose. Screening, diagnostic probability, discrimination, prognosis, baseline profile, change monitoring, goal attainment, or service evaluation.
3. Match context. Age/development, diagnosis, stage/severity, acute/chronic status, setting, language/culture, device, evaluator, delivery mode, and time/resource constraints.
4. Check a core outcome set. Use COMET/COSMIN recommendations when relevant; do not treat inclusion in a core set as proof that an instrument is adequate.
5. Search current evidence. Open systematic measurement reviews, original validation studies, official instrument documentation, language adaptation, license, and scoring rules. Verify discovery-database numbers in primary sources.
6. Evaluate properties separately. Content validity, structural validity, internal consistency, reliability, measurement error, construct/criterion/cross-cultural validity, and responsiveness.
7. Evaluate interpretability. Score direction, norms, floor/ceiling effects, MIC/MCID, SEM, and MDC/SDC. Attach every number to its population, version/language, follow-up, method, direction, and uncertainty.
8. Evaluate feasibility and equity. Time, burden, equipment, training, cost/license, permission, accessibility, cognition/communication, fatigue, safety, and repeatability.
9. Choose the smallest sufficient set. Cover patient priority, key function/participation, safety, and change detection without redundant measures.
10. Create a standardized reassessment protocol. Preserve instructions, speed condition, device/orthosis, assistance, environment, scoring, and time point.

Diagnostic special tests

Extract protocol, threshold/positive rule, intended role, reference standard, patient spectrum, verification/blinding, flow/timing, and analysis bias. Report sensitivity, specificity, LR+/LR−, and 95% intervals. Calculate post-test probability only from a defensible pretest probability. Use a test cluster only when that exact combination and decision rule were validated.

Do not ask the user to self-administer a risky test to exclude an emergency.

Numeric guardrails

• “Validated” is insufficient; name the property, population, and study quality.
• Correlation is not agreement/reliability. Report ICC/kappa type/model, interval, retest timing, and stability.
• Interpret alpha/omega only after adequate dimensionality evidence.
• Distinguish measurement SEM from standard error of the mean.
• MDC/SDC addresses measurement error; MIC/MCID addresses importance. Neither is universally transferable.
• A distribution-only threshold is not patient importance; prefer a credible anchor-based estimate when available.
• Do not invent a “validated Turkish form.” Verify translation, cross-cultural validity, version, and permission.

Output

1. Measurement purpose and construct
2. Patient/setting/language match and missing critical data
3. Outcome-measure comparison table
4. Separate diagnostic-test table when applicable
5. recommended, conditional, insufficient evidence, or not recommended
6. Baseline and reassessment protocol
7. Safety, feasibility, accessibility, license, and uncertainty
8. Direct sources