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EPIDEMIOLOGY


SUMMARY:


• IBD is more common in developed countries, and is influenced by genetics, environment, ethnicity and gender.


• Canada has among the highest frequency of people with CD and UC in the world.


• An estimated 129,000 people live with CD and 104,000 people live with UC in Canada in 2012, for a total of 233,000 individuals with IBD (0.67% of the population).


• Over 10,200 people every year are newly diagnosed with IBD: 5,700 people with CD and 4,500 with UC.


• The age of onset is typically in the twenties for CD, and throughout adulthood for UC. The number of people with disease peaks around age 30 for both diseases, and does not decline until age 80.


• Children in Canada are increasingly being diagnosed with IBD, particularly those under the age of 10. An estimated 5,900 Canadian children have IBD.


• Compared to people without disease, there is 47% increased risk of premature death with CD, which includes an increased risk of colorectal cancer. There does not seem to be an increased risk of premature death with UC.


THE IMPACT OF INFLAMMATORY BOWEL DISEASE IN CANADA 26


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