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Table 4 Associations between the previous surgery and patient characteristics for patients with ulcerative colitis

From: A national survey on the patterns of treatment of inflammatory bowel disease in Canada

Characteristics % Reporting Surgery Odds ratio 95% CI
Sex    
   Male 15.2 Referent  
   Female 15.8 1.0 0.7 – 1.5
Age    
   16–24 11.8 Referent  
   25–40 17.5 1.2 0.4 – 3.9
   41–55 16.8 1.0 0.3 – 3.0
   >55 15.0 0.6 0.2 – 1.9
Region    
   Maritimes 8.3 Referent  
   Quebec 11.3 1.5 0.5 – 4.6
   Ontario 16.0 2.1 0.7 – 6.0
   Prairies 24.4 3.5 1.2 – 10.4
   West Coast 7.6 0.9 0.2 – 3.3
  1. † Adjusted for duration of disease
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