Baseline characteristics of patients with early arthritis in the ESPOIR cohort (n = 813).
| Characteristic | Values |
|---|---|
| Female, n (%) | 623 (76.7) |
| Age, yrs, mean (SD) | 48.1 (12.5) |
| White, n (%) | 749 (92.2) |
| Symptom duration at first visit, mo, mean (SD) | 3.4 (1.7) |
| IgM rheumatoid factor–positive, n (%) | 372 (45.8) |
| Anti-CCP–positive, n (%) | 315 (38.8) |
| ESR, mm/h, mean (SD) | 29.5 (24.6) |
| CRP level, mg/l, mean (SD) | 22.2 (33.6) |
| DAS28, mean (SD) | 5.11 (1.30) |
| HAQ score, mean (SD) | 0.98 (0.68) |
| mTSS, mean (SD) | 5.76 (7.70) |
| Modified Sharp erosion score, mean (SD) | 2.76 (4.68) |
| Modified Sharp joint-space-narrowing score, mean (SD) | 3.00 (4.42) |
| “Typical” erosive disease#, n (%) | 185 (25.1) |
| HLA-DRB1*01 or *04 gene, n (%) | 438 (57.6) |
| 1987 ACR criteria, n (%) | 579 (71.3) |
| 2010 ACR/EULAR criteria, n (%) | 641 (79) |
↵# According to 2010 ACR/EULAR RA classification criteria. ESR: erythrocyte sedimentation rate; CRP: C-reactive protein; DAS28: Disease Activity Score in 28 joints; HAQ: Health Assessment Questionnaire; mTSS: van der Heijde-modified total Sharp score; anti-CCP: anticyclic citrullinated peptide antibodies; ACR: American College of Rheumatology; EULAR: European League Against Rheumatism; RA: rheumatoid arthritis.