Table 1.
Patient characteristics
| Analysis | All (n = 121) | Responders (n = 73) | Non-responders (n = 48) | P -value |
|---|---|---|---|---|
| Age, mean (years) |
60.5 ± 14.0 |
58.2 ± 14.8 |
64.0 ± 11.9 |
0.023 |
| Sex (M/F) |
31/90 |
19/54 |
12/36 |
0.899 |
| Current smoking |
19/121 (16%) |
11/73 (15%) |
8/48 (17%) |
0.813 |
| RA duration, median (years) |
10 (0 to 60) |
11 (0 to 60) |
8 (0 to 40) |
0.60 |
| Weight, mean (kg) |
73.1 ± 16.4 |
72.1 ± 16.2 |
74.8 ± 16.8 |
0.375 |
| HAQ index, mean |
1.07 ± 0.64 |
1.08 ± 0.67 |
1.05 ± 0.60 |
0.791 |
| DAS28 index, mean |
4.40 ± 1.20 |
4.53 ± 1.22 |
4.21 ± 1.52 |
0.145 |
| CRP, median (mg/L) |
10.8 (0.1 to 159) |
12.9 (0.2 to 159) |
9.4 (0.7 to 119) |
0.14 |
| Larsen-Dale index, mean |
1.50 ± 1.3 |
1.2 ± 1.06 |
1.9 ± 1.45 |
0.002 |
| Synovial fluid, median (ml) | 10 (0 to 105) | 8 (0 to 105) | 16.5 (0 to 75) | 0.006 |
Mean ± SD, Median (range), Bold figures: P <0.003. CRP, C-reactive protein; DAS28, disease activity score in 28 joints; F, female; HAQ, Health Assessment Questionnaire; M, male; n, number; RA, rheumatoid arthritis; SD, standard deviation.