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Published on: December 8, 2014
Clostridium difficile Infection and Risk of Colectomy in Patients with Inflammatory Bowel Disease: A Bias-adjusted
Yingxi Chen1, Luis Furuya-Kanamori, Suhail A Doi
1*Research School of Population Health, Australian National University, Canberra, Australia; †College of Medicine, Qatar University, Doha, Qatar; ‡School of Agricultural, Computational, and Environmental Sciences, University of Southern Queensland, Toowoomba, Australia; and §Division of Gastroenterology, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts.
Background:
Clostridium difficile infection (CDI) is a common complication of inflammatory bowel diseases (IBDs) and is associated with worse outcome. Variable rates of colectomy have been reported among IBD complicated by CDI. We conducted a systematic review and meta-analysis of studies to assess the association between CDI and colectomy among patients with IBD.
Methods:
The literature was systematically searched using PubMed from inception through April 2016. Studies were limited to cohort, case-control, and cross-sectional studies reporting colectomy risk stratified by CDI in patients with IBD. We estimated summary ORs and 95% CIs using the quality-effects model. Study quality was assessed using an adaptation of the Newcastle-Ottawa scale.
Results:
Six studies were included in the meta-analysis, comprising 8 data sets. Results from meta-analysis showed that CDI was a significant risk factor for colectomy among patients with IBD, mainly patients with ulcerative colitis, almost doubling the odds (OR 1.90; 95% CI, 1.23-2.93). There was significant heterogeneity across studies (Q = 22.02, P < 0.001; I = 68%). Funnel plots were grossly asymmetrical. Results of sensitivity analysis restricting studies to those reporting ulcerative colitis only and studies using laboratory tests to confirm CDI were consistent with the result from the main analysis.
Conclusions:
CDI is a significant risk factor for colectomy in patients with IBD. Further research is needed to investigate the attributable risks of surgery due to CDI among patients with Crohn's disease.
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