Population
407 new patients with confirmed Crohn's disease in Cardiff between 1931 and 1985
Design
Cohort
Follow-up
50 years (1931-1985)
Authors
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Rising Crohn's incidence may reflect environmental shifts; leaves open identification of modifiable risks before practice change.
The incidence of Crohn's disease in Cardiff significantly increased over a 50-year period, with an increasing proportion of colorectal disease.
Rose et al. (1988) studied this question.
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