Table 3

 Associations of male gender with Bath Ankylosing Spondylitis Radiographic Index Spine score category from the Prospective Study of Outcomes in Ankylosing Spondylitis cohort, with adjustments for age or duration of ankylosing spondylitis and multivariate modelling*

Independent variableAge-adjusted OR (95% CI)p ValueDuration adjusted OR (95% CI)p Value
*These ORs represent the likelihood that men were more likely than women to be in a higher BASRI-spine category than in the same or in a lower category.
Male3.86 (2.53 to 5.90)<0.0014.10 (2.69 to 6.26)<0.001
Multivariate analysis
Male3.81 (2.45 to 5.93)<0.0013.83 (2.46 to 5.96)<0.001