Epidemiology of Ulcerative Colitis and Regional Enterocolitis (Crohn's Disease) in Norway

Abstract

Individual reports from the paediatric, surgical and medical departments and from non-specialized hospitals showed that the incidence of cases with ulcerative colitis for the years 1964–69 was 32.9 per million of the population per year compared to 23 for the years 1956–60. For the same period the yearly incidence of regional enterocolitis was 10.5 per million compared to 2.3 for the years 1956–60. For the years 1961–63 the figures were 23.3 for ulcerative colitis and 3.1 for regional enterocolitis. The incidence per year did not show any significant increase from 1954 to 1969, and the ratio of ulcerative colitis to regional enterocolitis was 3.2 compared to 10.4 to 1 in 1956–60.

Key-words:

• Colitis, ulcerative
• enterocolitis, regional
• epidemiology
• gastrointestinal diseases