Arthritis care & research
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Arthritis care & research · Sep 2017
Performance of the Patient-Reported Outcomes Measurement Information System 29-Item Profile in Rheumatoid Arthritis, Osteoarthritis, Fibromyalgia, and Systemic Lupus Erythematosus.
The Patient-Reported Outcomes Measurement Information System (PROMIS) was developed to improve measurement of patient-reported outcomes. We examined performance of the 29-item PROMIS Profile (PROMIS-29) in persons with rheumatoid arthritis (RA), osteoarthritis (OA), fibromyalgia (FM), and systemic lupus erythematosus (SLE). ⋯ Results provide guarded support for using the PROMIS-29 in these conditions. The PROMIS-29 4-item static forms appear to identify differences among levels of health and to measure constructs similar to those measured by legacy questionnaires. However, large ceiling effects suggest that measurement may be more precise at the "bad" ends of the scales, which may limit responsiveness, and differences by mode of administration appear to exist.