| アブストラクト | BACKGROUND & AIMS: Previous research has yielded conflicting data as to whether the natural history of inflammatory bowel disease follows a seasonal pattern. The purpose of this study was to determine whether relapse of inflammatory bowel disease follows a seasonal pattern either across a cohort of patients or within individual patients. METHODS: We used 1988 to 1997 data from the General Practice Research Database to conduct a retrospective cohort study of 1587 patients with Crohn's disease (mean age at start of follow-up, 41 +/- 17 years) and 2773 patients with ulcerative colitis (mean age at start of follow-up, 48 +/- 16 years). Flares of disease were identified by receipt of a new prescription for either corticosteroids or 5-ASA medications following an interval of at least 4 months without prescriptions for either class of medication. Logistic regression was used to adjust the association of season of the year and flare of disease for potential confounding variables. RESULTS: There was no association between season of the year and flare of Crohn's disease (P = 0.66). Season of the year was only weakly associated with flares of ulcerative colitis (P = 0.02). Compared with winter, spring had very slightly higher rates of flares (OR = 1.13, 95% CI: 1.05-1.23). We did not observe seasonal patterns within individual patients experiencing multiple flares (P > 0.05 for Crohn's disease and ulcerative colitis). CONCLUSIONS: Although we observed a slight increase in exacerbations of ulcerative colitis in the spring, in general, these data do not support an association between season of the year and flares. |
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| ジャーナル名 | Gastroenterology |
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| Pubmed追加日 | 2004/2/28 |
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| 投稿者 | Lewis, James D; Aberra, Faten N; Lichtenstein, Gary R; Bilker, Warren B; Brensinger, Colleen; Strom, Brian L |
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| 組織名 | Center for Clinical Epidemiology and Biostatistics and Department of Medicine,;University of Pennsylvania Centers for Education and Research on Therapeutics,;Philadelphia, 19104-6021, USA. jlewis@cceb.med.upenn.edu |
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| Pubmed リンク | https://www.ncbi.nlm.nih.gov/pubmed/14988820/ |
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