| RA patients (n = 500) | Non-RA controls (n = 1000) | p |
---|---|---|---|
Age (years) | 42.7 ± 11.9 | 43.3 ± 12.6 | 0.34 |
Gender | Â | Â | Â |
 Male | 144 | 323 | 0.18 |
 Female | 356 | 677 |  |
BMI (kg/m2) | 23.1 ± 4.3 | 23.4 ± 5.7 | 0.26 |
CRP (mg/L) | 58.5 ± 21.3 | N/A | N/A |
RF (IU/ml) | 92.1 ± 7.9 | N/A | N/A |
ESR (mm/h) | 34.9 ± 10.3 | N/A | N/A |