Characteristic | RA patients | Controlsa | |||
---|---|---|---|---|---|
Total (n = 89) | Erosive RA (n = 46) | Nonerosive RA (n = 43) | Serum (n = 62) | Synovial fluid (n = 21) | |
Age, years | 58 ± 2 | 62 ± 1.8 | 54 ± 3.1** | 52 ± 1.4 | 64 ± 2 |
Gender, F/M | 60/29 | 29/17 | 31/12 | 46/16 | 12/9 |
Erosivity | 46/89 | 46 | 0 | ||
No. (%) RF+ | 51 | 41 (89%) | 10 (23%)*** | ||
Disease duration, years | 11 ± 1.3 | 13 ± 1.3 | 8.2 ± 1.3* | ||
No. (%) with disease duration <3 years | 27 (30%) | 9 (20%) | 18 (42%) | ||
CRP, mg/l | 40 ± 8 | 42 ± 7 | 36 ± 7 | ||
WBC count Blood Synovial fluid | 7.7 ± 2.2 13 ± 3.5 | 8.0 ± 0.4 14.3 ± 3.4 | 7.1 ± 0.4 12.6 ± 2.3 | ||
Synovial fluid | 13 ± 3.5 | 14.3 ± 3.4 | 12.6 ± 2.3 | ||
No. (%) DMARD-treated | 47 (53%) | 36 (76%) | 11 (26%) | ||
Methotrexate | 31 | 25 | 6*** | ||
Other | 16 | 11 | 5 |