Evidence map›Paper›PMID 38159083›Full record

SynthesisInflammatory bowel diseases2024

The Epidemiology of Inflammatory Bowel Disease in Oceania: A Systematic Review and Meta-Analysis of Incidence and Prevalence.

Angela J Forbes, Chris M A Frampton, Andrew S Day, Gilaad G Kaplan, Richard B Gearry

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Inflammatory bowel diseases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Dietary Patterns and Food Choices of Adults With Inflammatory Bowel Disease in New Zealand.JGH open : an open access journal of gastroenterology and hepatology · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Dietary and physical activity habits of adults with inflammatory bowel disease in Aotearoa, New Zealand: A cross-sectional study.Nutrition & dietetics : the journal of the Dietitians Association of Australia · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. 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.

Angela J ForbesDepartment of Medicine, University of Otago Christchurch, Christchurch, New Zealand.ORCID 0000-0003-0186-5877
Chris M A FramptonDepartment of Medicine, University of Otago Christchurch, Christchurch, New Zealand.ORCID 0000-0003-0603-5661
Andrew S DayDepartment of Paediatrics, University of Otago Christchurch, Christchurch, New Zealand.ORCID 0000-0003-2290-7386
Gilaad G KaplanDepartment of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.ORCID 0000-0003-2719-0556
Richard B GearryDepartment of Medicine, University of Otago Christchurch, Christchurch, New Zealand.ORCID 0000-0002-2298-5141

Funding

Leona M. and Harry B. Helmsley Charitable Trust G-2108-04777
6 · The paper itself

Abstract

backgroundPast studies have shown high rates of inflammatory bowel disease (IBD) in Australia and New Zealand (NZ). We aimed to describe the epidemiology of IBD in Australia, NZ, and the surrounding region (collectively termed Oceania) by conducting a systematic review and meta-analysis.

methodsElectronic databases were searched from inception to April 2023 for studies reporting incidence or prevalence rates of IBD, Crohn's disease (CD), or ulcerative colitis (UC) in Oceania. All study designs were included. A meta-analysis calculated pooled estimates of incidence and prevalence, and a sensitivity analysis compared the pooled population-based studies with the non-population-based studies and the Australian and NZ studies separately.

resultsNineteen incidence and 11 prevalence studies were included; 2 studies were from the Pacific Islands, with the rest coming from Australia and NZ. Pooled estimates showed high incidence rates of 19.8 (95% confidence interval [CI], 15.8-23.7) for IBD, 8.3 (95% CI, 6.9-9.8) for CD, and 7.4 (95% CI, 5.7-9.1) for CD per 100 000 person-years. CD was more common than UC in most studies. The pooled estimates for the prevalence studies were 303.3 (95% CI, 128.1-478.4) for IBD, 149.8 (95% CI, 71.0-228.5) for CD, and 142.2 (95% CI, 63.1-221.4) for UC per 100 000 persons. Studies using population-based data collection methods showed higher pooled rates for both incidence and prevalence.

conclusionsThe incidence and prevalence of IBD in Oceania is high. The studies were heterogeneous and there were several geographic areas with no information, highlighting the need for more epidemiological studies of IBD.

Indexed as

Inflammatory Bowel DiseasesAustraliaColitis, UlcerativeCrohn DiseaseHumansIncidenceNew ZealandOceaniaPrevalenceAustraliaepidemiologyincidenceNew ZealandOceaniaprevalence

Identifiers

PMID38159083
PMCPMC11532596

What OpenQuestion holds

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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.