ArticleDigestive diseases and sciences2023
Incidence of Inflammatory Bowel Disease in New Zealand Remains High, Findings in the Manawatū Region.
Article in Digestive diseases and sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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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.
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Who cites it
2 citing papers in PubMed, 5 citations in OpenAlex.
- Optimising Blood Test Monitoring Frequency for Inflammatory Bowel Disease Patients: Balancing Adherence, Comfort and Risk.Canadian journal of gastroenterology & hepatology · 2026Article
- The role of mastery in Crohn's disease: a cross-sectional study.Therapeutic advances in gastroenterology · 2025Article
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4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNew Zealand (NZ) has one of the world's highest rates of inflammatory bowel diseases (IBD), however available data are limited to southern, urban regions.
aimsTo determine the incidence and prevalence of IBD in the Manawatū region of NZ.
methodsPatients in the Manawatū region, with a diagnosis of IBD made between 2011 and 2015 were identified. Demographic, diagnostic and disease data were collected, fulfilment of diagnostic criteria was assessed, and incidence rates were calculated. Comparison of disease phenotype and observed diagnostic criteria was made between diagnosis and 12-months following diagnosis. All resident patients with a diagnosis of IBD current on 5 March 2013 were identified, and prevalence rates were calculated.
resultsThe mean annual age-standardised incidence rates of UC, CD, and IBD were 10.2, 17.0, and 27.2 per 100,000. IBD incidence was highest among those of European ethnicity (24.8 per 100,000), followed by Asian (1.4), and Māori (1.1). IBD incidence in the urban population was 34.0 per 100,000 (95% CI 24.1-46.0) compared to the rural population of 5.6 (95% CI 0.4-22.4). The age-standardised point prevalence of UC, CD, and IBD on 5 March 2013 was 157.7, 231.8, and 397.9 per 100,000, respectively.
conclusionsThe incidence and prevalence of IBD in the Manawatū region are comparable to those reported in other Australasian studies. Incidence was lower in Māori, and in the rural population. Follow-up is required to identify any changes in incidence and phenotype, and whether rural residence remains protective.
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