From the abstract of Social Security Work Disability And Its Predictors In Patients With Fibromyalgia by Frederick Wolfe MD, Brian T. Walitt MD MPH, Robert S. Katz MD, and Winfried Häuser MD, published in Arthritis Care & Research, a publication of the American College of Rheumatology:
During the study, 34.8% (95% CI 32.9, 36.8) of fibromyalgia patients received SSD [Social Security Disability]. The annual incidence of SSD among patients not receiving SSD at study enrollment was 3.4% (3.0, 3.9%), and 25% were estimated to be work disabled at 9.0 years of follow-up. By comparison, the prevalence of SSD in rheumatoid arthritis patients with concomitant fibromyalgia was 55.6% (54.3, 57.0) and was 42.4% in osteoarthritis. By study conclusion, 31.4% of SSD awardees were no longer receiving SSD. In univariate models, incident SSD in patients with fibromyalgia was predicted by socio-demographic measures and by symptom burden; but the strongest predictor was functional status (Health Assessment Questionnaire disability [HAQ]).