IBD rates higher than expected and more severe

Researchers identified 1011 IBD cases in Victoria’s Barwon region in 2010–11 and calculated a prevalence rate of 344.6 per 100,000, which is on a par with New Zealand, Denmark and North America.

The prevalence rate for Crohn’s disease was 197.3 per 100,000, and for ulcerative colitis it was 136 per 100,000.

Lead author Dr Corrie Studd from St Vincent’s Hospital, Melbourne, said previous Australian data on IBD rates, in a 2005 Access Economics report, showed 1600 new IBD cases a year.

But based on the new figures, Dr Studd said 5400 new cases could be expected annually.

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