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

Key Points

• The aim is to standardize physical function assessments by linking different Physical Performance Test versions to the PROMIS Physical Function metric.
• Linked three versions of the Physical Performance Test to the PROMIS Physical Function metric.
• Created crosswalk tables to aid in score translation.
• Assessed applicability across diverse populations.
• Successful linkage of PPT versions to the PROMIS-PF metric.
• Facilitated valid comparisons of performance-based and patient-reported assessments.
• Recommended cautious use of specific algorithms for post-COVID patients.