{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:17:33Z","timestamp":1747185453986,"version":"3.40.5"},"reference-count":25,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2024,7,10]],"date-time":"2024-07-10T00:00:00Z","timestamp":1720569600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Internal Medicine Journal"],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>M\u0101ori have historically seen a lower rate of inflammatory bowel disease (IBD) compared to New Zealand's non\u2010M\u0101ori population. Recent reports have shown an increasing rate of IBD among M\u0101ori patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aim<\/jats:title><jats:p>We performed a study to identify the phenotypes of IBD in the M\u0101ori population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients with IBD of M\u0101ori ethnicity were retrospectively identified from four large regions of New Zealand. Electronic records were reviewed to collect details of patients' demographics, phenotypes and clinical features.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We identified 165 M\u0101ori patients with IBD, of whom 74 (45.4%) had Crohn disease (CD), 86 (53.5%) had ulcerative colitis (UC) and 5 (3.0%) had IBD\u2010unclassified (IBD\u2010U). There were more female (61.8%) patients compared to male (38.2%). This was attributed to the higher ratio of female patients with CD over male (73.9% vs 26.1%), whereas sex was evenly distributed in UC (female 52.2%, male 48.8%). Ileocolonic CD was most frequently seen (36.2%), and the majority had non\u2010stricturing disease (62.3%) with the absence of perianal involvement (78.2%). Bimodal age peaks were observed, with a first peak at 25\u201329\u2009years and a second peak at 45\u201349\u2009years. There was a five\u2010fold increase in the incidence of IBD in M\u0101ori over 20\u2009years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>We present the largest study describing IBD in M\u0101ori. IBD phenotypes in M\u0101ori were similar to previous regional IBD reports, but there was a significantly higher proportion of female patients with CD in M\u0101ori and an earlier second age peak at 45\u201349\u2009years. Increasing incidence of IBD in M\u0101ori has again been demonstrated.<\/jats:p><\/jats:sec>","DOI":"10.1111\/imj.16416","type":"journal-article","created":{"date-parts":[[2024,7,10]],"date-time":"2024-07-10T07:10:37Z","timestamp":1720595437000},"page":"1541-1547","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Phenotypes of inflammatory bowel disease in the M\u0101ori population of New Zealand"],"prefix":"10.1111","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5792-0981","authenticated-orcid":false,"given":"David","family":"Law","sequence":"first","affiliation":[{"name":"Department of Gastroenterology Waikato Hospital  Hamilton New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rajan","family":"Patel","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Christchurch Hospital  Christchurch New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard","family":"Gearry","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Christchurch Hospital  Christchurch New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John","family":"Llewelyn","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Tauranga Hospital  Tauranga New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Byron","family":"Theron","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Whang\u0101rei Hospital  Whang\u0101rei New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Clarence","family":"Kerrison","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Waikato Hospital  Hamilton New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James","family":"Fulforth","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Waikato Hospital  Hamilton New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,10]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2468-1253(19)30333-4"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.3349\/ymj.2021.62.2.99"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/MIB.0000000000000638"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1093\/ecco-jcc\/jjz139"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0252458"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/ibd\/izab096"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/imj.16072"},{"key":"e_1_2_6_9_1","first-page":"99","article-title":"Low but increasing rates of inflammatory bowel disease in M\u0101ori: a report from Lakes District Health Board IBD","volume":"135","author":"Qiu M","year":"2022","journal-title":"N Z Med J"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1093\/ibd\/izx100"},{"volume-title":"Wai 2575 M\u0101ori Health Trends Report","year":"2019","author":"Ministry of Health","key":"e_1_2_6_11_1"},{"key":"e_1_2_6_12_1","unstructured":"Hauora.Report on Stage 1 of the Health Services and Outcomes Kaupapa Inquiry. 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