Variable | Training (n = 416) | Testing (n = 139) | P valueb |
---|---|---|---|
Male, n (%) | 310 (74.5) | 107 (77.0) | 0.640 |
Age, years | 43.7 ± 13.0 | 43.3 ± 13.2 | 0.721 |
BMI, kg/m2 | 24.1 ± 4.0 | 24.0 ± 3.8 | 0.875 |
HLA-B27, n (%) | 336 (80.8%) | 109 (78.4) | 0.833 |
Smoking | Â | Â | 0.640 |
 Never, n (%) | 231 (55.5) | 73 (52.5) |  |
 Ex-smoker, n (%) | 49 (11.8) | 13 (9.4) |  |
 Current smoker, n (%) | 136 (32.7) | 53 (38.1) |  |
Peripheral arthritis, n (%) | 120 (28.8) | 40 (28.8) | 0.223 |
Enthesitis, n (%) | 35 (8.4) | 21 (15.1) | 0.035 |
Uveitis, n (%) | 109 (26.2) | 29 (20.9) | 0.251 |
Psoriasis, n (%) | 20 (4.8) | 9 (6.5) | 0.586 |
Inflammatory bowel disease, n (%) | 13 (3.1) | 3 (2.2) | 0.766 |
ESR, mm/h | 38.2 ± 29.4 | 36.1 ± 28.3 | 0.462 |
CRP, mg/dL | 2.0 ± 3.3 | 1.7 ± 2.7 | 0.223 |
ASDAS-CRP | 3.4 ± 0.9 | 3.3 ± 0.9 | 0.836 |
Use of TNF inhibitor, n (%) a | 233 (56.0) | 77 (55.4) | 0.978 |
Presence of syndesmophyte(s), n (%) | 161 (38.7) | 100 (38.9) | 1.000 |
mSASSS, units | 8.5 ± 14.5 | 6.6 ± 12.6 | 0.187 |
 Cervical spine | 3.3 ± 6.9 | 2.5 ± 6.1 | 0.269 |
 Lumbar spine | 5.2 ± 9.1 | 4.1 ± 7.6 | 0.166 |