title: Epidemiology of ulcerative colitis in western Norway.
abstract: The incidence of ulcerative colitis (UC) in the three counties that compose Western Norway was registered in a prospective study during the years 1984 and 1985. Both inpatients and outpatients were included. Five hundred and fifty general practitioners and 12 hospitals participated in the study. A total of 239 patients were diagnosed in this area with 807,000 inhabitants, giving a mean annual incidence of 14.8 per 100,000. For patients between 30 and 35 years of age the age-specific incidence rate was 31.2. The M/F sex ratio was 1.10. Familial occurrence of inflammatory bowel disease was found in 11% of the patients. Patients with rectal involvement only constituted 35% of the patients.
authors.affiliation: Institute of General Practice, University of Bergen, Norway.
authors.forename: K
authors.initials: K
authors.lastname: Haug
authors.forename: E
authors.initials: E
authors.lastname: Schrumpf
authors.forename: S
authors.initials: S
authors.lastname: Barstad
authors.forename: G
authors.initials: G
authors.lastname: Fluge
authors.forename: J F
authors.initials: JF
authors.lastname: Halvorsen
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003093:Colitis, Ulcerative / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D009664:Norway; D011446:Prospective Studies; D012737:Sex Factors