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Association between Proton Pump Inhibitor Therapy and Clostridium difficile Infection: A Contemporary Systematic Review and Meta-Analysis

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Listed:
  • Imad M Tleyjeh
  • Aref A Bin Abdulhak
  • Muhammad Riaz
  • Faisal A Alasmari
  • Musa A Garbati
  • Mushabab AlGhamdi
  • Abdur Rahman Khan
  • Mohamad Al Tannir
  • Patricia J Erwin
  • Talal Ibrahim
  • Abed AlLehibi
  • Larry M Baddour
  • Alex J Sutton

Abstract

Introduction: Emerging epidemiological evidence suggests that proton pump inhibitor (PPI) acid-suppression therapy is associated with an increased risk of Clostridium difficile infection (CDI). Methods: Ovid MEDLINE, EMBASE, ISI Web of Science, and Scopus were searched from 1990 to January 2012 for analytical studies that reported an adjusted effect estimate of the association between PPI use and CDI. We performed random-effect meta-analyses. We used the GRADE framework to interpret the findings. Results: We identified 47 eligible citations (37 case-control and 14 cohort studies) with corresponding 51 effect estimates. The pooled OR was 1.65, 95% CI (1.47, 1.85), I2 = 89.9%, with evidence of publication bias suggested by a contour funnel plot. A novel regression based method was used to adjust for publication bias and resulted in an adjusted pooled OR of 1.51 (95% CI, 1.26–1.83). In a speculative analysis that assumes that this association is based on causality, and based on published baseline CDI incidence, the risk of CDI would be very low in the general population taking PPIs with an estimated NNH of 3925 at 1 year. Conclusions: In this rigorously conducted systemic review and meta-analysis, we found very low quality evidence (GRADE class) for an association between PPI use and CDI that does not support a cause-effect relationship.

Suggested Citation

  • Imad M Tleyjeh & Aref A Bin Abdulhak & Muhammad Riaz & Faisal A Alasmari & Musa A Garbati & Mushabab AlGhamdi & Abdur Rahman Khan & Mohamad Al Tannir & Patricia J Erwin & Talal Ibrahim & Abed AlLehibi, 2012. "Association between Proton Pump Inhibitor Therapy and Clostridium difficile Infection: A Contemporary Systematic Review and Meta-Analysis," PLOS ONE, Public Library of Science, vol. 7(12), pages 1-12, December.
    • Handle: RePEc:plo:pone00:0050836
    DOI: 10.1371/journal.pone.0050836
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    References listed on IDEAS

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    1. Alessandro Liberati & Douglas G Altman & Jennifer Tetzlaff & Cynthia Mulrow & Peter C Gøtzsche & John P A Ioannidis & Mike Clarke & P J Devereaux & Jos Kleijnen & David Moher, 2009. "The PRISMA Statement for Reporting Systematic Reviews and Meta-Analyses of Studies That Evaluate Health Care Interventions: Explanation and Elaboration," PLOS Medicine, Public Library of Science, vol. 6(7), pages 1-28, July.
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    Cited by:

    1. Cynthia J. Lin & Timothy J. Wade & Elizabeth D. Hilborn, 2015. "Flooding and Clostridium difficile Infection: A Case-Crossover Analysis," IJERPH, MDPI, vol. 12(6), pages 1-17, June.

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