Characteristics and comparative study of patients with rheumatoid arthritis with and without fibromyalgia. Data are mean ± SD (range).
| Without FM | With FM | p | |
|---|---|---|---|
| No. (%) | 44 (83) | 9 (17) | |
| Age, yrs | 60.8 ± 15.1 (29–92) | 64.0 ± 14.4 (51–77) | 0.644 |
| Disease duration, yrs | 3.6 ± 3.5 (0–11) | 4.8 ± 4.5 (0–12) | 0.448 |
| VAS | 39.7 26.6 (0–100) | 56.2 ± 21.0 (15–87) | 0.048 |
| ESR | 28.1 ± 16.1 (4–72) | 30.8 ± 17.3 (10–69) | 0.484 |
| CRP | 1.38 ± 3.10 (0.3–15.2) | 0.66 ± 0.42 (0.3–1.6) | 0.725 |
| mHAQ | 0.46 ± 0.48 (0–1.6) | 1.44 ± 0.43 (0.9–2.1) | 0.000 |
| TJC28 | 2.3 ± 5.1 (0–25) | 17.4 ± 9.5 (5–28) | 0.000 |
| SJC28 | 0.8 ± 1.8 (0–8) | 1.1 ± 1.4 (0–4) | 0.129 |
| DAS28 | 3.39 ± 1.15 (1.78–6.85) | 5.55 ± 0.78 (4.43–6.99) | 0.000 |
VAS: Visual analog scale of disease assessment by the patient; ESR: erythrocyte sedimentation rate; CRP: C-reactive protein; mHAQ: modified Health Assessment Questionnaire; TJC28: 28 tender joint count; SJC28: 28 swollen joint count; DAS: Disease Activity Score.