A meta-analysis of the role of smoking in inflammatory bowel disease

  title={A meta-analysis of the role of smoking in inflammatory bowel disease},
  author={Beverly M. Calkins},
  journal={Digestive Diseases and Sciences},
  • B. Calkins
  • Published 1 December 1989
  • Medicine
  • Digestive Diseases and Sciences
A relationship between not smoking and ulcerative colitis has been examined in all English reports. This paper evaluates the ulcerative colitis/nonsmoking and the Crohn's disease/smoking association by meta-analysis and against causality criterion for chronic diseases. A review of the literature, meta-analysis of selected studies, and assessment of causality criterion all suggest that not smoking and ulcerative colitis and smoking and Crohn's disease are consistent with a causal relationship… 
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