Table 1.
Demographic and clinical characteristics of rheumatoid arthritis (RA) and osteoarthritis (OA) patients.
| Characteristics | RA patients (n = 28) | OA patients (n = 12) |
|---|---|---|
| Age, years (mean, S.D.) | 58.3 ± 14.9 | 56.8 ± 7.5 |
| Female (n, %) | 21, 75 | 7, 58 |
| Male (n, %) | 7, 25 | 5, 42 |
| RF+ (n, %)a | 19, 68 | — |
| ACPA+ (n, %)b | 18, 64 | — |
| ESR in mm/h (mean, S.D.) | 29.3 ± 24.2 | — |
| CRP in mg/ml (mean, S.D.) | 26.7 ± 23.8 | — |
| DAS28-ESR (mean, S.D.) | 3.75 ± 0.94 | — |
ACPA: anticyclic citrullinated peptide antibodies; CRP: C-reactive protein; DAS: disease activity score; ESR: erythrocyte sedimentation rate; OA: osteoarthritis; RA: rheumatoid arthritis; RF: rheumatoid factor. aRF +: >10 IU/ml. bACPA+: >10 IU/ml.