Evidence map›Paper›PMID 35599362›Full record

ArticleAlimentary pharmacology & therapeutics2022

Minor impact on fertility in men with inflammatory bowel disease: A National Cohort Study from Sweden.

Emma Druvefors, Roland E Andersson, Ulf Hammar, Kalle Landerholm, Pär Myrelid

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 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

7 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Article
  3. Influence of biological sex in inflammatory bowel diseases.Nature reviews. Gastroenterology & hepatology · 2025
    Review
  4. Review
  5. Article
  6. Article
  7. Article
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 2 institutions in 1 country.

Emma DruveforsDepartment of Surgery, County Hospital Ryhov, Jönköping, Sweden.ORCID 0000-0001-5360-1932
Roland E AnderssonDepartment of Surgery, County Hospital Ryhov, Jönköping, Sweden.ORCID 0000-0002-1460-0248
Ulf HammarDepartment of Medical Sciences, Molecular Epidemiology, Uppsala University, Uppsala, Sweden.ORCID 0000-0001-8367-5000
Kalle LanderholmDepartment of Surgery, County Hospital Ryhov, Jönköping, Sweden.ORCID 0000-0001-6808-371X
Pär MyrelidDepartment of Biomedical and Clinical Sciences, Faculty of Health Sciences, Linköping University, Linköping, Sweden.ORCID 0000-0001-7518-9213
Linköping University · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsOnset of inflammatory bowel disease (IBD) in men is most common during childbearing age, but little is known about the impact on fertility. Previous studies of fertility in men were small, which justifies this large nation-based registry study.

methodsFertility was assessed in a national cohort of men with IBD aged 15-44 years in 1964-2014, identified from the Swedish National Patient Register, and in a reference cohort matched for age and place of residence (ratio 1:5). Information about childbirths was found in the Swedish Multi-Generation Register. Patients with indeterminate colitis or inconsistent IBD coding were classified as IBD-unclassified (IBD-U).

resultsThe cohorts included 29,104 men with IBD and 140,901 matched individuals. IBD patients had a lower fertility rate (number of births per 1000 person years) compared with the matched individuals; 1.28 (SD 1.27) versus 1.35 (SD 1.31; p < 0.001). Fertility was somewhat impaired in all IBD subtypes compared with the matched cohort; ulcerative colitis (UC) (hazard ratio [HR] 0.93, 95% CI 0.91-0.96), Crohn's disease (CD) (HR 0.95, 95% CI 0.92-0.98) and IBD-U 0.92, 95% CI 0.89-0.95. The cumulated total parity and the parity progression were also decreased for all IBD subtypes. Within the IBD cohort disease severity, intensity of medical treatment (CD) and bowel surgery (IBD-U) were further associated with impaired fertility.

conclusionsThis nationwide cohort study shows only slightly impaired fertility in men with IBD.

Indexed as

Colitis, UlcerativeCrohn DiseaseInflammatory Bowel DiseasesChronic DiseaseCohort StudiesFertilityHumansMaleRegistriesSwedenCrohn’s diseasefertilityinflammatory bowel diseasemenulcerative colitis

Identifiers

PMID35599362
PMCPMC9322263
OpenAlexW4281286337

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.