What is the global prevalence of inflammatory bowel disease (IBD)?

Updated: Oct 17, 2017
  • Author: William A Rowe, MD; Chief Editor: BS Anand, MD  more...
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Answer

The highest rates of IBD are assumed to be in developed countries, and the lowest are considered to be in developing regions; colder-climate regions and urban areas have a greater rate of IBD than those of warmer climates and rural areas. Internationally, the incidence of IBD is approximately 0.5-24.5 cases per 100,000 person-years for ulcerative colitis and 0.1-16 cases per 100,000 person-years for Crohn disease. [30] Overall, the prevalence for IBD is 396 cases per 100,000 persons annually. [30]

A review of IBD reported that the prevalence of Crohn disease in North America was 319 per 100,000 persons, whereas in Europe, it was 322 per 100,000 persons. [31] Prevalence rates for ulcerative colitis were 249 per 100,000 persons in North America and 505 per 100,000 persons in Europe. The annual incidence of Crohn disease was 20.2 per 100,000 person-years in North America, 12.7 per 100,000 person-years in Europe, and 5.0 per 100,000 person-years in Asia and the Middle East, whereas incidence rates of ulcerative colitis were 19.2 per 100,000 person-years in North America, 24.3 per 100,000 person-years in Europe, and 6.3 per 100,000 person-years in Asia and the Middle East. Time-trend analyses showed statistically significant increases in the incidence of IBD over time. [31]


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