Table 4.

Logistic regression analysis of early axial ankylosis.

Characteristicß EstimateSEp95% CI
Estimate in patients with AS*
  Sex0.790.410.051.10–4.90
  HLA-B271.050.500.031.06–7.76
  Absence of peripheral arthritis1.160.420.0070.13–0.72
  Uveitis0.670.420.110.85–4.49
  Hip involvement−0.340.380.370.33–1.50
  Constant−1.470.27< 0.0001
In men with AS**
  HLA-B271.690.800.031.12–26.71
  Absence of peripheral arthritis1.010.530.050.12–0.90
  Uveitis1.040.540.051.02–8.32
  Hip involvement−0.200.470.960.38–0.50
  Constant−1.160.430.005
In women with AS***
  HLA-B270.630.710.370.46–7.55
  Absence of peripheral arthritis1.420.760.050.05–1.02
  Uveitis0.280.730.700.31–3.60
  Hip involvement−0.910.700.190.10–1.58
  Constant−1.940.40< 0.0001
  • * Overall predictive value is 77.4%.

  • ** Overall predictive value is 71.4%.

  • *** Overall predictive value is 84.4%.