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Microbial Preparations (Probiotics) for the Prevention of Clostridium difficile Infection in Adults and Children: An Individual Patient Data Meta-analysis of 6,851 Participants

  • Bradley C. Johnston (a1), Lyubov Lytvyn (a2), Calvin Ka-Fung Lo (a3), Stephen J. Allen (a4), Duolao Wang (a4), Hania Szajewska (a5), Mark Miller (a6), Stephan Ehrhardt (a7), John Sampalis (a6), Deniz G. Duman (a8), Pietro Pozzoni (a9), Agostino Colli (a9), Elisabet Lönnermark (a10), Christian P. Selinger (a11), Samford Wong (a12), Susan Plummer (a13), Mary Hickson (a14), Ruzha Pancheva (a15), Sandra Hirsch (a16), Bengt Klarin (a17), Joshua Z Goldenberg (a18), Li Wang (a19) (a20), Lawrence Mbuagbaw (a2), Gary Foster (a21), Anna Maw (a22), Behnam Sadeghirad (a2), Lehana Thabane (a2) and Dominik Mertz (a2) (a23)...
  • Please note a correction has been issued for this article.

Abstract

OBJECTIVE

To determine whether probiotic prophylaxes reduce the odds of Clostridium difficile infection (CDI) in adults and children.

DESIGN

Individual participant data (IPD) meta-analysis of randomized controlled trials (RCTs), adjusting for risk factors.

METHODS

We searched 6 databases and 11 grey literature sources from inception to April 2016. We identified 32 RCTs (n=8,713); among them, 18 RCTs provided IPD (n=6,851 participants) comparing probiotic prophylaxis to placebo or no treatment (standard care). One reviewer prepared the IPD, and 2 reviewers extracted data, rated study quality, and graded evidence quality.

RESULTS

Probiotics reduced CDI odds in the unadjusted model (n=6,645; odds ratio [OR] 0.37; 95% confidence interval [CI], 0.25–0.55) and the adjusted model (n=5,074; OR, 0.35; 95% CI, 0.23–0.55). Using 2 or more antibiotics increased the odds of CDI (OR, 2.20; 95% CI, 1.11–4.37), whereas age, sex, hospitalization status, and high-risk antibiotic exposure did not. Adjusted subgroup analyses suggested that, compared to no probiotics, multispecies probiotics were more beneficial than single-species probiotics, as was using probiotics in clinical settings where the CDI risk is ≥5%. Of 18 studies, 14 reported adverse events. In 11 of these 14 studies, the adverse events were retained in the adjusted model. Odds for serious adverse events were similar for both groups in the unadjusted analyses (n=4,990; OR, 1.06; 95% CI, 0.89–1.26) and adjusted analyses (n=4,718; OR, 1.06; 95% CI, 0.89–1.28). Missing outcome data for CDI ranged from 0% to 25.8%. Our analyses were robust to a sensitivity analysis for missingness.

CONCLUSIONS

Moderate quality (ie, certainty) evidence suggests that probiotic prophylaxis may be a useful and safe CDI prevention strategy, particularly among participants taking 2 or more antibiotics and in hospital settings where the risk of CDI is ≥5%.

TRIAL REGISTRATION

PROSPERO 2015 identifier: CRD42015015701

Infect Control Hosp Epidemiol 2018;771–781

Copyright

© 2018 by The Society for Healthcare Epidemiology of America. All rights reserved. 

Corresponding author

Address correspondence to Bradley C. Johnston, PhD, Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Centre for Clinical Research, Room 404, 5790 University Avenue, Halifax, Nova Scotia, Canada, B3H 1V7 (bjohnston@dal.ca).

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  • Cited by 6

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Microbial Preparations (Probiotics) for the Prevention of Clostridium difficile Infection in Adults and Children: An Individual Patient Data Meta-analysis of 6,851 Participants

  • Bradley C. Johnston (a1), Lyubov Lytvyn (a2), Calvin Ka-Fung Lo (a3), Stephen J. Allen (a4), Duolao Wang (a4), Hania Szajewska (a5), Mark Miller (a6), Stephan Ehrhardt (a7), John Sampalis (a6), Deniz G. Duman (a8), Pietro Pozzoni (a9), Agostino Colli (a9), Elisabet Lönnermark (a10), Christian P. Selinger (a11), Samford Wong (a12), Susan Plummer (a13), Mary Hickson (a14), Ruzha Pancheva (a15), Sandra Hirsch (a16), Bengt Klarin (a17), Joshua Z Goldenberg (a18), Li Wang (a19) (a20), Lawrence Mbuagbaw (a2), Gary Foster (a21), Anna Maw (a22), Behnam Sadeghirad (a2), Lehana Thabane (a2) and Dominik Mertz (a2) (a23)...
  • Please note a correction has been issued for this article.

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