The 10-item Patient-Reported Outcomes Measurement Information System (PROMIS) physical function form (PF-10a) was feasible to implement in a diverse rheumatoid arthritis (RA) population, a recent study found. Clinical and demographic data were abstracted from electronic health records for all RA patients seen at a university-based rheumatology clinic between February 2013 and February 2015. Researchers evaluated floor and ceiling (edge) effects and construct validity of PF-10a in a subgroup of patients with Health Assessment Questionnaire (HAQ) scores (n= 189). They used linear mixed-effects models to assess responsiveness of PF-10a to longitudinal changes in the Clinical Disease Activity Index (CDAI) for patients in the entire clinical cohort, with both scores recorded on at least 2 encounters (n=326). They found:

• Half of the patients were nonwhite, and 15% were non-English speakers.
• Over a 2-year period, PF10a was successfully implemented; 97% of patients and 89% of encounters had at least 1 measurement performed.
• PF-10a had fewer ceiling (defined as best) effects than the HAQ (8% vs 22%), and convergent validity was high.