Table 1.
General characteristics of healthy controls and patients with osteoarthritis or rheumatoid arthritis.
| HC (n = 30) | OA (n = 45) | RA (n = 46) | |
|---|---|---|---|
| Age | 53.9 ± 13.89 | 66.7 ± 10.8 ** | 64.6 ± 10.7 ** |
| Sex (M:F) | 1:1.5 | 1:3 | 1:2.5 |
| BMI (kg/m2) | NA | 24.9 ± 3.3 | 24.4 ± 3.6 |
| ESR (mm/h) | NA | 12.6 ± 7.5 | 61.4 ± 33.5 ## |
| CRP (mg/dL) | NA | 0.2 ± 0.1 | 2.2 ± 2.0 ** |
| Rheumatoid factor (+) | NA | 0 (0%) | 43 (93.5%) |
| Anti-cyclic citrullinated peptide (+) | NA | 0 (0%) | 45 (97.8%) |
| DAS28-ESR | NA | NA | 4.6 ± 1.4 |
| DAS28-CRP | NA | NA | 3.2 ± 1.3 |
Data expressed as mean ± SD. Statistical significance was determined by t-test. ** p < 0.01, vs. HC, ## p < 0.01, vs. OA. BMI: body mass index; CRP: C-reactive protein; DAS28: 28-joint disease activity score; ESR: erythrocyte sedimentation rate; HC: healthy control; NA: nonavailable; OA: osteoarthritis; RA: rheumatoid arthritis.