Table 1.

Characteristics of patients with fibromyalgia and rheumatoid arthritis.

VariableFM, n = 2,046RA, n = 20,374
MeanSDMeanSD
Age, yrs57.412.160.513.4
Sex, % male4.922.8
Self-reported depression, %33.415.1
Self-reported depression, lifetime %63.933.0
Disabled (age < 62 yrs), %30.521.2
Ordinary opioids, %32.022.9
Dissatisfied with health, %56.133.4
VAS QOL0.740.10.780.1
Sleep disturbance, 0–105.63.03.83.1
Regional Pain Score, 0–1010.55.55.75.1
Pain, 0–105.82.64.02.8
Global severity, 0–104.92.53.72.5
HAQ, 0–31.30.71.10.7
Patient activity score, 0–104.92.13.82.3
Fatigue, 0–106.42.74.53.0
Symptom intensity scale, 0–105.82.33.72.3
Comorbidity Index, 0–91.61.41.41.4
Symptom count, 0–3713.36.67.76.1
Mental health, SF-3663.621.272.519.1
  • Differences for all variables between groups were significant at p < 0.001. SD: standard deviation; VAS: visual analog scale; QOL: quality of life: HAQ: Health Assessment Questionnaire; SF-36: Medical Outcomes Study Short-Form 36.