Table 1.

Demographic and clinical features of study patients with AS.

FeaturesWhole GroupWomenMenp
No. (%)235 (100)96 (41)139 (59)
Mean age, yrs, ± SD39.1 ± 11.241.8 ± 11.437.2 ± 10.70.75
Mean age at onset, yrs, ± SD27.1 ± 9.829.7 ± 10.225.1 ± 9.00.87
Mean disease duration, yrs, ± SD12.4 ± 9.312.14 ± 9.012.14 ± 9.50.94
Delay in diagnosis, yrs, ± SD6.7 ± 7.47.4 ± 7.96.2 ± 7.10.78
HLA-B27, %70.263.375.50.05
Peripheral arthritis, %42.153.330.90.001
Enthesitis, %50.664.836.40.001
Hip involvement, %51.052.050.00.65
Uveitis, %23.426.220.60.09
Early axial ankylosing, %26.415.034.80.001