The Manitoba Inflammatory Bowel Disease Cohort Study: prolonged symptoms before diagnosis--how much is irritable bowel syndrome?

Clinical Gastroenterology and Hepatology : the Official Clinical Practice Journal of the American Gastroenterological Association
Twila BurgmannC N Bernstein

Abstract

The Manitoba Inflammatory Bowel Disease (IBD) Cohort Study is a population-based prospective cohort study of recently diagnosed IBD (n=396). At enrollment, 162 (41%) indicated gastrointestinal symptom>or=3 years before diagnosis. We aimed to determine whether coexistence of irritable bowel syndrome (IBS) had a role in symptoms before IBD diagnosis. Patients were interviewed about symptoms and investigations before IBD diagnosis. Patients were assessed retrospectively for preexisting IBS. Of 112 patients interviewed, 58% had Crohn's disease, 37% UC, 3% proctitis, and 2% indeterminant colitis. Symptoms at IBD diagnosis were considered the same (7%), worse (43%), different (20%), or both worse and different (30%) than at initial onset. Mean time between initial symptoms and diagnosis was 11 years (range, 3-48 years). Increasing age at IBD diagnosis correlated with a longer period after initial symptoms and diagnosis of IBD (r=.32, P<.0001). Gender and specific IBD diagnosis had no effect on this time period. Patients were identified as no previous IBS (51%), likely IBS (25%), and possible IBS (24%). Those with likely and possible IBS had a trend toward longer symptom duration before IBD diagnosis than those without IBS (P=.07). Of...Continue Reading

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