Table 1 Characteristics of 308 patients with mild and severe rheumatoid arthritis (RA)
Parameter | Mild RA (n = 170) | Severe RA (n = 138) | All patients |
|---|---|---|---|
Age (years) | 64 (31–88) | 65.5 (34–82) | 65 (31–88) |
Sex (% female) | 88.8 | 79.7 | 82 |
Disease duration (years) | 12 (4–37) | 18.5 (7–44) | 14 (4–44) |
Ratingen score | 9 (0–24) | 52 (25–179) | 20 (0–179) |
Swollen joint count | 1 (0–27) | 4 (0–28) | 2 (0–28) |
IgM RF-positive patients | 86 (50.5%) | 110 (79.7%) | 196 (63.6%) |
SE-positive patients (%) | 55.6 | 72.4 | 64.3 |
CRP (mg/dl) | 2 (0.1–94) | 3 (0.2–135) | 2.0 (0.1–135) |
Number of failed DMARDs | 1 (0–3) | 2 (0–9) | 1 (0–9) |