Ethnic differences in inflammatory bowel disease: Results from the United Kingdom inception cohort epidemiology study
Authors
Misra, RLimdi, J
Cooney, R
Sakuma, S
Brookes, M
Fogden, E
Pattni, S
Sharma, N
Iqbal, T
Munkholm, P
Burisch, J
Arebi, N
Issue Date
2019-10-28
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© The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved. BACKGROUND: The current epidemiology of inflammatory bowel disease (IBD) in the multiethnic United Kingdom is unknown. The last incidence study in the United Kingdom was carried out over 20 years ago. AIM: To describe the incidence and phenotype of IBD and distribution within ethnic groups. METHODS: Adult patients1 (> 16 years) with newly diagnosed IBD (fulfilling Copenhagen diagnostic criteria) were prospectively recruited over one year in 5 urban catchment areas with high South Asian population. Patient demographics, ethnic codes, disease phenotype (Montreal classification), disease activity and treatment within 3 months of diagnosis were recorded onto the Epicom database. RESULTS: Across a population of 2271406 adults, 339 adult patients were diagnosed with IBD over one year: 218 with ulcerative colitis (UC, 64.3%), 115 with Crohn's disease (CD, 33.9%) and 6 with IBD unclassified (1.8%). The crude incidence of IBD, UC and CD was 17.0/100000, 11.3/100000 and 5.3/100000 respectively. The age adjusted incidence of IBD and UC were significantly higher in the Indian group (25.2/100000 and 20.5/100000) compared to White European (14.9/100000, P = 0.009 and 8.2/100000, P < 0.001) and Pakistani groups (14.9/100000, P = 0.001 and 11.2/100000, P = 0.007). The Indian group were significantly more likely to have extensive disease than White Europeans (52.7% vs 41.7%, P = 0.031). There was no significant difference in time to diagnosis, disease activity and treatment. CONCLUSION: This is the only prospective study to report the incidence of IBD in an ethnically diverse United Kingdom population. The Indian ethnic group showed the highest age-adjusted incidence of UC (20.5/100000). Further studies on dietary, microbial and metabolic factors that might explain these findings in UC are underway.Citation
Misra, R., Limdi, J., Cooney, R., Sakuma, S., Brookes, M., Fogden, E., Pattni, S., Sharma, N., Iqbal, T., Munkholm, P., Burisch, J. and Arebi, N. (2019) Ethnic differences in inflammatory bowel disease: Results from the United Kingdom inception cohort epidemiology study, World Journal of Gastroenterology, 25(40), pp. 6145-6157.Publisher
Baishideng Publishing Group Inc.Journal
World Journal of GastroenterologyPubMed ID
31686769Additional Links
https://www.wjgnet.com/1007-9327/full/v25/i40/6145.htmType
Journal articleLanguage
enISSN
1007-9327EISSN
2219-2840ae974a485f413a2113503eed53cd6c53
10.3748/wjg.v25.i40.6145
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Except where otherwise noted, this item's license is described as Licence for published version: Creative Commons Attribution-NonCommercial 4.0 International
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