Utility of the PROMIS pediatric pain interference scale in juvenile fibromyalgia

Abstract

Objective: The current study tested the utility of the PROMIS Pediatric Pain Interference (PPI) in relation to the widely-used Functional Disability Inventory (FDI) in a small-scale clinical trial. Methods: Forty youth with juvenile fibromyalgia (JFM) were randomized to either CBT only or a combined CBT and neuromuscular exercise group (i.e., FIT Teens). Participants completed the PPI and FDI at baseline, post-treatment, and three-month follow-up. Results: The PPI and FDI were significantly correlated at baseline (r =. 51) and post treatment (r =. 53), and demonstrated similar improvements (d PPI =. 87, d FDI = 1.22, p