Both Patient-Reported Outcomes Measurement Information System Pain Interference (PROMIS-PI) and PROMISE-Pain Behavior (PROMISE-PB) demonstrated good psychometric properties in patients with rheumatoid arthritis (RA), a new study found. 2,029 patients with RA completed the full PROMISE-PI and 1,554 patients the full PROMIS-PB. Researchers found:
- The PROMIS-PI and PROMIS-PB banks were sufficiently unidimensional, had negligible local dependence, good monotonicity, and a good Graded Response Model (GRM) fit.
- Both item-banks showed good cross-cultural validity, measurement invariance, good construct validity, high reliability, and absence of floor and ceiling effects.
- Both PROMISE-PI and PROMIS-PB can be used in research and clinical practice.
Crins MHP, et al. First validation of the full PROMIS pain interference and pain behavior item banks in patients with rheumatoid arthritis. [Published online ahead of print September 28, 2019]. Arthritis Care Res. doi: 10.1002/acr.24077.