Demographic and clinical parameters of responders and non-responders; response is defined as a 50% improvement of the initial BASDAI (BASDAI 50)
| BASDAI 50 responder (n = 55) | BASDAI 50 non-responder (n = 44) | p Value | |
|---|---|---|---|
| Male sex, No (%) | 38 (69) | 29 (66) | 0.7 |
| Age (years), mean (SD) | 36.3 (8.6) | 41.1 (8.7) | 0.008 |
| Disease duration (years), mean (SD) | 12.5 (8.2) | 17.8 (8.7) | 0.002 |
| HLA-B27 positive, No (%) | 51 (93) | 37 (84) | 0.9 |
| BASDAI, mean (SD) | 6.6 (1.2) | 6.2 (1.3) | 0.085 |
| BASFI, mean (SD) | 4.9 (2.0) | 6.0 (1.9) | 0.007 |
| CRP (mg/l), mean (SD) | 30.0 (25.3) | 19.9 (20.8) | 0.035 |