Evidence map›Paper›PMID 33629099›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2021

Proton-Pump Inhibitor Use and the Risk of Community-Associated Clostridium difficile Infection.

Malin Inghammar, Henrik Svanström, Marianne Voldstedlund, Mads Melbye, Anders Hviid, Kåre Mølbak, Björn Pasternak

Open access · hybridAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
0.7field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 55 citations in OpenAlex.

  1. Trial
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  6. First nationwide point-prevalence survey on healthcare-associated infections and antibiotic use in long-term care facilities, Switzerland, September 2024.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
  7. Article
  8. Article
  9. The evolving landscape of live biotherapeutics in the treatment of Clostridioides difficile infection.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2025
    Review
  10. Article
  11. Gastroenterological Surgery and Management ofJournal of the anus, rectum and colon · 2025
    Review
  12. The Aging Stomach: Clinical Implications ofInternational journal of molecular sciences · 2024
    Review
  13. Review
  14. Journal of clinical medicine · 2024
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Analysis of risk factors ofPrzeglad gastroenterologiczny · 2024
    Article
  20. Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 3 countries.

Malin InghammarDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Henrik SvanströmDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Marianne VoldstedlundDivision of Infectious Diseases Preparedness, Statens Serum Institut, Copenhagen, Denmark.
Mads MelbyeDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Anders HviidDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Kåre MølbakDivision of Infectious Diseases Preparedness, Statens Serum Institut, Copenhagen, Denmark.
Björn PasternakDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Statens Serum Institut · DKKarolinska Institutet · SELund University · SEUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundProton-pump inhibitors (PPIs) have been reported to increase the risk of community-associated Clostridium difficile infection (CDI), but the association remains disputed.

methodsA nationwide cohort study among adults in Denmark, 2010-2013, linking register data on C. difficile testing, filled prescriptions, and patient characteristics. All incident episodes of community-associated CDI (ie, positive culture, molecular assay, or toxin test in individuals without previous hospitalization in the prior 12 weeks and without a positive test for C. difficile in the prior 8 weeks) were identified in the Danish National Microbiological Database. Self-controlled case-series analyses were used to estimate incidence rate ratios (IRRs) for community-associated CDI, comparing periods with and without exposure to PPIs. By design, models took fixed confounders such as chronic disease, genetics, and socioeconomic status into account; further, time-varying confounders, including hospital stay and antibiotic and corticosteroid use were adjusted for.

results3583 episodes of community-associated CDI were identified, of which 964 occurred during current use of PPIs, 324 occurred 0-6 months after treatment cessation, 123 occurred 6-12 months after treatment cessation, and 2172 occurred during time periods without use of PPIs. The adjusted IRR was 2.03 (95% confidence interval, 1.74-2.36), comparing use of PPI with nonuse. The increased risk remained elevated in later time periods: 1.54 (1.31-1.80) for 0-6 months, 1.24 (1.00-1.53) for 6-12 months after current use.

conclusionsUse of PPIs was associated with moderately increased risk of community-associated CDI. The risk remained elevated up to 1 year after PPI treatment had ended.

Indexed as

Clostridioides difficileClostridium InfectionsEnterocolitis, PseudomembranousAdultAnti-Bacterial AgentsCohort StudiesHumansProton Pump InhibitorsRisk FactorsAnti-Bacterial AgentsProton Pump InhibitorsC. difficile infectionepidemiologyproton-pump inhibitorself-controlled case-series analysis

Identifiers

PMID33629099
PMCPMC8204777
OpenAlexW3131404367

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.