RESEARCH ARTICLE Multicomponent Interdisciplinary Group Intervention for Self-Management of Fibromyalgia: A Mixed-Methods Randomized Controlled

Background This study evaluated the efficacy of the PASSAGE Program, a structured multicomponent interdisciplinary group intervention for the self-management of FMS. Methods Amixed-methods randomized controlled trial (intervention (INT) vs. waitlist (WL)) was con-ducted with patients suffering from FMS. Data were collected at baseline (T0), at the end of the intervention (T1), and 3 months later (T2). The primary outcome was change in pain in-tensity (0-10). Secondary outcomes were fibromyalgia severity, pain interference, sleep quality, pain coping strategies, depression, health-related quality of life, patient global im-pression of change (PGIC), and perceived pain relief. Qualitative group interviews with a subset of patients were also conducted. Complete data from T0to T2were available for 43 patients. Results The intervention had a statistically significant impact on the three PGIC measures. At the end of the PASSAGE Program, the percentages of patients who perceived overall improve-ment in their pain levels, functioning and quality of life were significantly higher in the INT Group (73%, 55%, 77 % respectively) than in the WL Group (8%, 12%, 20%). The same dif-ferences were observed 3 months post-intervention (Intervention group: 62%, 43%, 38 % v