Table 1.
Demographic characteristics of rheumatoid arthritis (RA) patients, osteoarthritis (OA) patients and healthy donors
| Clinical data | RA | OA | HD |
|---|---|---|---|
| Age, mean (range), years | 51·05 (26–78) | 53·25 (19–78) | 51·79 (49–55) |
| Sex, no. female | 78 | 66 | 64 |
| Sex, no. male | 22 | 34 | 36 |
| WBC, mean ± s.d., 109/l | 8·00 ± 2·43 | 7·36 ± 2·54 | 6·14 ± 1·56 |
| RBC, mean ± s.d., 1012/l | 4·39 ± 0·41 | 4·43 ± 0·54 | 4·70 ± 0·44 |
| PLT, mean ± s.d., 109/l | 262·66 ± 63·18 | 254·15 ± 88·36 | 267·10 ± 63·67 |
| HGB, mean ± s.d., g/l | 128·70 ± 15·57 | 130·32 ± 16·31 | 141·70 ± 14·69 |
| RDW, mean ± s.d., % | 14·43 ± 1·70 | 13·76 ± 1·36 | 13·00 ± 0·80 |
| ACPA, median (IQR), RU/ml | 125·8 (151·8) | 1 (0·7) | – |
| CRP, median (IQR), mg/l | 10·25 (12·4) | 12·6 (8·22) | – |
| RF, median (IQR), IU/ml | 107 (172·95) | < 10·2 (0) | – |
| ESR, median (IQR), mm/h | 25 (26·75) | 20 (24·75) | – |
RA = rheumatoid arthritis; OA = osteoarthritis; HD = healthy donors; ACPA = anti‐cyclic citrullinated peptide antibodies; RF = rheumatoid factor; ESR = erythrocyte sedimentation rate; CRP = C‐reactive protein; IQR = interquartile range; s.d. = standard deviation.