| Seronegative RA | Healthy controls | Seropositive RA | Ankylosing spondylitis | |
|---|---|---|---|---|
| Age, years | 51,85±11,49 | 44,42±7,6 | 52,05±11,26 | 41,75±5,1 |
| Women, n (%) | 48 (88,9) | 34 (100) | 36 (90) | 20 (83) |
| RA duration, year | 9,8±6,75 | 11,25±9,1 | ||
| RF titre (median) | 10,77±3,21 | 345,88±405,32 | 12,1±3,23 | |
| Anti-CCP titre, median | 3,99±4,13 | 326, 81±286, 2 | 4,32±3,7 | |
| DAS28, median | 3,6±1,28 | 3,73±1,45 | ||
| ESR, median | 32,2±21,2 | 23,3±11,8 | 41,63±28,07 | 19,83±9,38 |
| CRP, median | 12,37±27,77 | 3,14±3,87 | 14,34±19,97 | 6,61±5,6 |