Evidence map›Paper›PMID 35190447›Full record

Observational studyBMJ open2022

Type 2 diabetes and risk of diverticular disease: a Danish cohort study.

Felix Wittström, Nils Skajaa, Kasper Bonnesen, Lars Pedersen, Ola Ekholm, Lisa Strate, Rune Erichsen, Henrik Toft Sørensen

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMJ open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Sex-Specific Multimorbidity-Multibehaviour Patterns in Primary Care Populations.International journal of environmental research and public health · 2025
    Observational
  5. Review
  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

8 authors at 4 institutions in 2 countries.

Felix WittströmDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark fw@clin.au.dk.ORCID 0000-0001-6845-6774
Nils SkajaaDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.ORCID 0000-0001-8351-7133
Kasper BonnesenDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Lars PedersenDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Ola EkholmNational Institute of Public Health, University of Southern Denmark, Odense, Denmark.ORCID 0000-0002-5563-7098
Lisa StrateDepartment of Medicine, University of Washington Medical School, Seattle, Washington, USA.
Rune ErichsenDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Henrik Toft SørensenDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Aarhus University Hospital · DKAalborg University Hospital · DKUniversity of Southern Denmark · DKUniversity of Washington Medical Center · US

Funding

Inflammation and Risk of DiverticulitisR01DK101495 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI CHAN, ANDREW T, STRATE, LISA L · 2014 to 2022
$4.4M
NIDDK NIH HHS R01 DK101495
6 · The paper itself

Abstract

objectivesTo investigate the association between type 2 diabetes and risk of diverticular disease. Unlike previous studies, which have found conflicting results, we aimed to distinguish between diabetes types and adjust for modifiable risk factors.

designObservational cohort study.

settingPopulation-based Danish medical databases, covering the period 2005-2018.

participantsRespondents of the 2010 or the 2013 Danish National Health Survey, of which there were 15 047 patients with type 2 diabetes and 210 606 patients without diabetes. PRIMARY AND SECONDARY OUTCOME MEASURES: Hazard ratios (HRs) for incident hospital diagnosis of diverticular disease adjusted for survey year, sex, age, body mass index (BMI), physical activity intensity, smoking behaviour, diet and education based on Cox regression analysis. As latency may affect the association between type 2 diabetes and diverticular disease, patients with type 2 diabetes were stratified into those with <2.5, 2.5-4.9 and ≥5 years duration of diabetes prior to cohort entry.

resultsFor patients with and without diabetes the incidence rates of diverticular disease were 0.76 and 0.54 events per 1000 person years, corresponding to a crude HR of 1.08 (95% CI 1.00 to 1.16) and an adjusted HR of 0.88 (95% CI 0.80 to 0.96). The HR was lower among patients with ≥5 years duration of diabetes (adjusted HR: 0.76, 95% CI 0.67 to 0.87) than among those with 2.5-4.9 years or <2.5 years duration.

conclusionWe found that patients with type 2 diabetes had a higher incidence rate of diverticular disease compared with patients without diabetes. However, after adjustment for modifiable risk factors, driven by BMI, type 2 diabetes appeared to be associated with a slightly lower risk of diverticular disease. Lack of adjustment for BMI may partially explain the conflicting findings of previous studies.

Indexed as

Diabetes Mellitus, Type 2Diverticular DiseasesCohort StudiesDenmarkHumansIncidenceRisk Factorsadult gastroenterologyepidemiologygeneral diabetes

Identifiers

PMID35190447
PMCPMC8862453
OpenAlexW4213237605

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.