Number of patients, sex, age, duration of disease, CRP, and ESR in both groups in relation to different diagnoses. Results shown as number or median (range)
| Number of patients | Female (n) | Male (n) | Age (years) | Duration of disease (months) | CRP (mg/l) | ESR (mm/1st h) | Rheumatoid factor (n) | Shared epitope HLA- DR1B (n) | |
|---|---|---|---|---|---|---|---|---|---|
| *Six patients had psoriatic arthritis and one patient had ankylosing spondylitis; †one patient had systemic lupus erythematosus and polyarthritis and one patient had an undifferentiated connective tissue disease (polyarthritis and Raynaud's phenomenon); ‡of these patients, one patient had psoriasis vulgaris and arthralgia of DIP joints, and two patients had HLA-B27 associated oligoarthritis without a history of gastrointestinal or urogenital infections; §all patients had psoriatic arthritis. | |||||||||
| Group I | 28 | 20 | 8 | 41 (20–66) | 42.5 (24–221) | 3.7 (1.0–72.8) | 15 (2–81) | 10 | 16 |
| Rheumatoid arthritis | 16 | 14 | 2 | 45.5 (24–63) | 38.5 (24–161) | 3.8 (1.2–72.8) | 18 (5–81) | 10 | 12 |
| Spondyloarthropathy* | 7 | 2 | 5 | 37 (35–48) | 62 (31–89) | 1.1 (1.0–26.8) | 7 (2–49) | 0 | 1 |
| Connective tissue disease with arthritis | 2† | 2 | 0 | 42.5 (36–49) | 128 (35–221) | 3.8 (1.0–6.7) | 41 (22–59) | 0 | 2 |
| Undifferentiated oligoarthritis | 3‡ | 2 | 1 | 35 (31–54) | 42 (26–51) | 3.8 (1.1–6.5) | 12 (9–46) | 0 | 1 |
| Group II | 21 | 13 | 8 | 58 (35–86) | 114 (32–330) | 3.9 (1.0–28.8) | 28 (4–81) | 14 | 10 |
| Rheumatoid arthritis | 15 | 10 | 5 | 57 (39–86) | 149 (32–330) | 3.5 (1.0–28.8) | 28 (6–81) | 13 | 10 |
| Spondyloarthropathy§ | 6 | 3 | 3 | 61 (35–64) | 95.5 (58–197) | 5.7 (1.0–9.3) | 26.5 (4–59) | 1 | 0 |