Evidence map›Paper›PMID 34431591›Full record

ArticleUnited European gastroenterology journal2021

Irritable bowel syndrome and risk of glaucoma: An analysis of two independent population-based cohort studies.

Zachary E McPherson, Henrik T Sørensen, Erzsébet Horváth-Puhó, Ashish Agar, Minas T Coroneo, Andrew White, Ian C Francis, Louis R Pasquale, Jae H Kang, Sven Pettersson and 2 more

Open access · hybridAbstract read
In one paragraph

Article in United European gastroenterology journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.7field-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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Role of gut microbiomes in different ocular pathologies: A systematic review.World journal of gastrointestinal pathophysiology · 2025
    Article
  3. Glaucomatous retinal ganglion cells: death and protection.International journal of ophthalmology · 2025
    Review
  4. Review
  5. Article
  6. Targeting the Gut-Eye Axis: An Emerging Strategy to Face Ocular Diseases.International journal of molecular sciences · 2023
    Review
  7. Article
  8. 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

12 authors at 9 institutions in 4 countries.

Zachary E McPhersonSchool of Medicine and Public Health, The Centre for Clinical Epidemiology and Biostatistics, The Australian GastroIntestinal Research Alliance (AGIRA), The University of Newcastle, Callaghan, New South Wales, Australia.ORCID 0000-0001-9072-013X
Henrik T SørensenDepartment of Clinical Epidemiology, Aarhus University, Aarhus, Denmark.
Erzsébet Horváth-PuhóDepartment of Clinical Epidemiology, Aarhus University, Aarhus, Denmark.
Ashish AgarDepartment of Ophthalmology, Prince of Wales Hospital, Randwick, New South Wales, Australia.
Minas T CoroneoDepartment of Ophthalmology, Prince of Wales Hospital, Randwick, New South Wales, Australia.
Andrew WhiteDepartment of Ophthalmology, Westmead Hospital, Westmead, New South Wales, Australia.
Ian C FrancisDepartment of Ophthalmology, Prince of Wales Hospital, Randwick, New South Wales, Australia.
Louis R PasqualeDepartment of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Jae H KangChanning Division of Network Medicine, Department of Medicine, Brigham & Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.
Sven PetterssonLee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
Nicholas J TalleySchool of Medicine and Public Health, The Centre for Clinical Epidemiology and Biostatistics, The Australian GastroIntestinal Research Alliance (AGIRA), The University of Newcastle, Callaghan, New South Wales, Australia.
Mark A McEvoySchool of Medicine and Public Health, The Centre for Clinical Epidemiology and Biostatistics, The Australian GastroIntestinal Research Alliance (AGIRA), The University of Newcastle, Callaghan, New South Wales, Australia.ORCID 0000-0002-5505-5557
Aarhus University · DKNanyang Technological University · SGUNSW Sydney · AUAustralasian Gastro Intestinal Research Foundation · AUBrigham and Women's Hospital · USIcahn School of Medicine at Mount Sinai · USLa Trobe University · AUPrince of Wales Hospital · AUThe University of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIrritable bowel syndrome (IBS) is a chronic disorder associated with an abnormal gastrointestinal microbiome. Microbiome-host interactions are known to influence organ function including in the central nervous system; thus, we sought to identify whether IBS may be a risk factor for the development of glaucoma.

designTwo prospective cohort studies. SUBJECTS: The 1958 United Kingdom Birth Cohort (UKBC; 9091 individuals) and the Danish National Registry of Patients (DNRP; 62,541 individuals with IBS and 625,410 matched general population cohort members).

methodsIn the UKBC, participants were surveyed throughout life (including at ages 42 and 50). The DNRP contains records of hospital-based contacts and prescription data from the national prescription database.

main outcome measureThe main outcome measure was incidence of glaucoma. In the UKBC, incident glaucoma at age 50 (n = 48) was determined through comparison of survey responses at ages 42 and 50 years. In the DNRP, glaucoma was assessed by hospital diagnosis (n = 1510), glaucoma surgery (n = 582) and initiation of glaucoma medications (n = 1674).

resultsIn the UKBC, the odds ratio (OR) of developing glaucoma between ages 42 and 50 in persons with a chronic IBS diagnosis was increased [OR: 5.84, 95% confidence interval (CI): 2.26-15.13]. People with an IBS diagnosis in the DNRP had a hazard ratio (HR) of 1.35 for developing physician-diagnosed glaucoma (95% CI: 1.16-1.56), an HR of 1.35 for undergoing glaucoma surgery (95% CI: 1.06-1.70) and an HR of 1.19 for initiating glaucoma medication (95% CI: 1.03-1.38).

conclusionsIn two large European cohort studies, IBS is a risk factor for glaucoma.

Indexed as

AdultAgedAged, 80 and overDenmarkFemaleGlaucomaHumansIncidenceIrritable Bowel SyndromeMaleMiddle AgedProspective StudiesRisk FactorsUnited Kingdomcohort studiesglaucomairritable bowel syndromerisk factor

Identifiers

PMID34431591
PMCPMC8598964
OpenAlexW3194859309

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.