Table 2 Clinical history, physical examination and laboratory findings of the studied patients
axSpA (n = 238) Mean ± SD/ (percentage) | Non-axSpA (n = 62) Mean ± SD/ (percentage) | p-value | |
|---|---|---|---|
Age (years) | 43.5 ± 13.1 | 47.1 ± 17.1 | 0.13 |
Duration of back pain (years) | 12.0 ± 11.4 | 7.1 ± 8.4 | 0.002 |
Male sex | 131 (55.0%) | 16 (26.2%) | < 0.001 |
HLA-B27 positivity | 169 (76.8%) | 8 (16.0%) | < 0.001 |
Smoker | 66 (27.8%) | 11 (19.0%) | 0.17 |
Regular alcohol use | 27 (11.6%) | 5 (5.3%) | 0.16 |
Radiologic AS | 149 (62.9%) | 0 (0.0%) | < 0.001 |
Back pain NRS | 5.74 ± 2.35 | 6.10 ± 2.27 | 0.32 |
BASDAI | 4.82 ± 2.00 | NA | – |
BASFI | 3.12 ± 2.44 | NA | – |
Tender joint count | 1.57 ± 3.02 | 2.74 ± 4.66 | 0.07 |
Swollen joint count | 0.60 ± 1.57 | 0.97 ± 2.58 | 0.31 |
Enthesitis score | 0.43 ± 0.90 | 0.58 ± 1.80 | 0.53 |
Number of dactylitis | 0.19 ± 1.02 | 0.26 ± 1.47 | 0.66 |
BASMI | 3.44 ± 1.65 | NA | – |
ESR (mm/hr) | 32.9 ± 25.6 | 34.5 ± 26.2 | 0.68 |
CRP (mg/L) | 1.07 ± 1.94 | 0.37 ± 1.27 | 0.001 |
Presence of FCL at C-spine | 28 (11.8%) | 2 (3.2%) | 0.05 |
Presence of FCL at T-spine | 91 (38.2%) | 8 (12.9%) | < 0.001 |
Presence of FCL at L-spine | 85 (35.7%) | 16 (25.8%) | 0.14 |
BASGI | 5.38 ± 2.49 | NA | – |
ASDAS ESR | 3.03 ± 1.02 | NA | – |
ASDAS CRP | 1.91 ± 0.83 | NA | – |