Table 1. Demographic and clinical characteristics of RA patients and healthy controls (HC).
| Parameters | RA patients | HC |
|---|---|---|
| (n = 60) | (n = 20) | |
| Age (years) | 51 (35–79) | 50 (30–75) |
| Gender ratio: female/male | 41/19 | 12/8 |
| RF (IU/mL) | 72 (0.11–2922)* | 11 (0.30–16.80) |
| CCP (U/mL) | 397 (0.65–3250)* | 18 (1.23–28.57) |
| ESR (mm/h) | 39 (4–126)* | 2 (0–5) |
| CRP (mg/L) | 25 (0.61–226)* | 6.9 (0–15) |
| DAS28 | 5.98 (3.29–9.33) | ND |
| WBC (109/L) | 6.72 (4.11–9.75) | 5.76 (4.01–9.89) |
Note: Data are presented as median (range) or number of cases. RA, rheumatoid arthritis; HC, healthy control; ND, non-detectable; RF, rheumatoid factor; CCP, cyclic citrullinated peptide antibody; DAS28, disease activity score of 28 joints; WBC, White blood cell counts; ESR, Erythrocyte sedimentation rate; CRP, C-reactive protein. Normal values: WBC: 3.50–9.50 × 109/L, ESR: 0–15 mm/h, CRP: 0–3 mg/L, RF: 0–15 IU/mL; CCP: 0–25 U/mL. *P < 0.05 versus HC.