Table 1.
Demographic characteristics of RA and HV in this study
| Clinical data | RA | HV | P value |
|---|---|---|---|
| Number | 26 | 10 | |
| Age, yearsa | 40.5 ± 9.2 (33–68) | 41.2 ± 10.3 (32–71) | 0.833 |
| Gender (F/M) | 24/2 | 9/1 | 0.347 |
| Disease duration (years)b | 17.2 (3–30) | None | |
| Morning stiff time (min)b | 3 (0–10) | None | |
| RF (IU/ml)b | 10.6 (4.7–13.2) | 7.5 (2.0–9.6) | 0.113 |
| CRP (mg/L)b | 1.85 (0.32–20.5) | 2.12 (0.49–8.9) | 0.224 |
| ESR (mm/h)b | 10.0 (3–29) | 8.9 (4–15) | 0.092 |
| SDAIb | 1.3 (0.1–3.0) | None | |
| Treatment with biological agents (%) | 17 (65.4) | None |
RA rheumatoid arthritis, HV healthy volunteers, CRP C-reactive protein, ESR erythrocyte sedimentation rate, SDAI simplified disease activity index
aMean ± SD (range)
bMedian (range)