Evidence map›Paper›PMID 34662440›Full record

ArticleAlimentary pharmacology & therapeutics2022

Use of contraceptives and risk of inflammatory bowel disease: a nested case-control study.

Thomas Joshua Pasvol, Stuart Bloom, Anthony Walter Segal, Greta Rait, Laura Horsfall

Open access · hybridAbstract read
In one paragraph

Article in Alimentary pharmacology & therapeutics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Influence of biological sex in inflammatory bowel diseases.Nature reviews. Gastroenterology & hepatology · 2025
    Review
  9. Review
  10. Hypothalamic amenorrhoea as an extraintestinal manifestation of Crohn's disease: A case report.Malaysian family physician : the official journal of the Academy of Family Physicians of Malaysia · 2025
    Article
  11. Article
  12. Review
  13. Article
  14. Contraception in Medically Complex Adolescents and Young Adults.Open access journal of contraception · 2024
    Article
  15. Drug Repurposing in Crohn's Disease Using Danish Real-World Data.Pragmatic and observational research · 2024
    Article
  16. Environmental risk factors for inflammatory bowel disease.United European gastroenterology journal · 2022
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Thomas Joshua PasvolThe Research Department of Primary Care and Population Health, University College London, London, UK.ORCID 0000-0002-8334-9931
Stuart BloomUniversity College London Hospitals NHS Foundation Trust, London, UK.ORCID 0000-0002-6361-4662
Anthony Walter SegalDivision of Medicine, University College London UK, London, UK.ORCID 0000-0001-7602-9043
Greta RaitThe Research Department of Primary Care and Population Health, University College London, London, UK.ORCID 0000-0002-7216-7294
Laura HorsfallThe Research Department of Primary Care and Population Health, University College London, London, UK.ORCID 0000-0002-0868-5660
Department of Health and Social Care · GBUniversity College London · GBUniversity College London Hospitals NHS Foundation Trust · GB

Funding

Wellcome Trust 209207Wellcome Trust 209207/Z/17/Z
6 · The paper itself

Abstract

backgroundHow contraceptive formulation, dose, duration of therapy and mode of delivery affects the risk of inflammatory bowel disease (IBD) is poorly described.

aimTo examine associations between types of hormonal contraception and development of IBD.

methodsThis was a nested case-control study using IQVIA Medical Research Data. Women aged 15-49 years with a new diagnosis of IBD were matched with up to six controls by age, practice and year. Odds ratios (OR) and 95% confidence intervals (95% CI) for incident IBD and use of contraception were calculated.

results4932 incident cases of IBD were matched to 29 340 controls. Use of combined oral contraceptive pills (COCPs) was associated with the development of Crohn's disease and ulcerative colitis (OR 1.60 [1.41-1.82] and 1.30 [1.15-1.45], respectively). Each additional month of COCP exposure per year of follow-up increased risk of Crohn's disease by 6.4% (5.1%-7.7%) and ulcerative colitis by 3.3% (2.1%-4.4%). Progestogen-only pills had no effect on Crohn's disease risk (OR 1.09 [0.84-1.40]) but there was a modest association with ulcerative colitis (OR 1.35 [1.12-1.64]). Parenteral contraception was not associated with the development of Crohn's disease or ulcerative colitis (OR 1.15 [0.99-1.47] and 1.17 [0.98-1.39], respectively).

conclusionsWe observed an increase in the risk of IBD with increasing duration of exposure to COCPs. Progestogen-only pills were not associated with Crohn's disease but there was a modest association with ulcerative colitis. There was no association between parenteral progestogen-only contraception and IBD. These findings are broadly consistent with a hypothesis that the oestrogen component of contraception may drive IBD pathogenesis.

Indexed as

Colitis, UlcerativeCrohn DiseaseInflammatory Bowel DiseasesAdolescentAdultCase-Control StudiesContraceptive AgentsFemaleHumansMiddle AgedYoung AdultContraceptive Agents

Identifiers

PMID34662440
PMCPMC7612921
OpenAlexW3206412934

What OpenQuestion holds

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LicenceCC BY
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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.