Standardizing physical function across assessment types: Three versions of the Physical Performance Test were linked to the PROMIS Physical Function metric in diverse populations

Three PPT versions were successfully linked to the standardized PROMIS-PF metric across diverse populations, facilitating valid comparisons and consistent interpretation of performance-based and patient-reported assessments of PF. The resulting user-friendly crosswalk tables may engage in broader application of standardized PF measurement by supporting straightforward score translation across distinct assessment types. For some population, specific linking algorithms might be required; cautious use is advised particularly in post-COVID patients.