Clinical and laboratory features of patients with juvenile idiopathic arthritis at the time of sampling. Results are expressed as mean (range).
| Disease Subtype | Age at Sampling, yrs | Disease Duration, yrs | Female/Male | No. Active Joints† | ESR, mm/h | CRP, mg/dl | Hb, g/dl | RF+, % | ANA+, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|---|
| Persistent oligoarticular, n = 9 | 11.2 (4.9–20.1) | 5.2 (0.2–11.1) | 8/1 | 1 (1–2) | 25 (5–63) | 0.98 (0.46–2.8) | 12.8 (12–15) | 0 | 100 | MTX (1 patient)
MTX + NSAID (1 patient) NSAID alone (1 patient) Nil (6 patients) |
| Extended oligoarticular*, n = 7 | 11.5 (4.3–18) | 6.8 (1.1–13.1) | 6/1 | 3 (1–8) | 31 (3–54) | 2.1 (0.46–7.5) | 12 (9.3–13.4) | 0 | 100 | MTX (6 patients)
MTX+ NSAID (1 patient) |
| Polyarticular*, n = 4 | 12 (5.3–18.1) | 7.2 (0.6–12.8) | 4/0 | 6 (1–11) | 30 (6–53) | 1.6 (0.46–3.2) | 11.8 (11.1–14) | 0
0 | 100
100 | MTX (2 patients)
NSAID alone (1 patient) Etanercept (1 patient) |
↵† Disease activity was defined by the presence of joint swelling or limitation of movement with either pain on movement or tenderness.
↵* Polyarticular course. ESR: erythrocyte sedimentation rate; CRP: C-reactive protein; Hb: hemoglobin; RF: rheumatoid factor antibody; ANA: antinuclear antibody; MTX: methotrexate; NSAID: nonsteroidal antiinflammatory drugs.