Table 3.

Factors associated with axial ankylosis in patients with AS.

VariablesMean BASRI-lumbar Score
Whole GrouppMen with ASpWomen with ASp
Women0.97 ± 0.140.97 ± 0.14
Men1.77 ± 0.11< 0.00011.77 ± 0.11
HLA-B27-positive1.58 ± 0.121.83 ± 0.161.10 ± 0.18
HLA-B27-negative0.85 ± 0.180.0020.81 ± 0.320.0060.90 ± 0.200.47
Peripheral arthritis
  Present0.93 ± 0.141.21 ± 0.220.68 ± 0.16
  Absent1.78 ± 0.11< 0.00012.04 ± 0.150.0031.30 ± 0.160.011
Enthesitis
  Present1.02 ± 0.181.42 ± 0.300.74 ± 0.19
  Absent1.72 ± 0.170.0071.98 ± 0.210.130.98 ± 0.260.47
Uveitis
  Present1.57 ± 0.212.21 ± 0.331.00 ± 0.25
  Absent1.41 ± 0.110.531.68 ± 0.150.151.00 ± 0.150.96
Hip involvement
  Present1.36 ± 0.131.60 ± 0.191.00 ± 0.16
  Absent1.55 ± 0.130.331.96 ± 0.180.180.93 ± 0.180.65