Table 3

Best-fit model for spinal mobility (BASMI).

Entire ankylosing spondylitis population (n=214)Disease duration ≤3 years (n=53)Disease duration >3 years (n=161)
 95% CI0.677–1.054−0.099 to 0.8580.715–1.134
 p Value<0.0010.117<0.001
 95% CI0.041–0.4320.173–1.016−0.070 to 0.383
 p Value0.0180.0070.174
Gender (male)
 95% CI−0.738 to 0.127−1.338 to 0.429−0.796 to 0.198
 p Value0.1650.3070.237
  • Results are shown for the entire AS population and according to disease duration.

  • ASspiMRI-a, Ankylosing Spondylitis spinal MRI activity; B, regression coefficient; BASMI, linear definition of the Bath Ankylosing Spondylitis Metrology Index; mSASSS, modified Stoke Ankylosing Spondylitis Spine Score.