title: Epidemiological survey of coeliac disease and inflammatory bowel disease in first-degree relatives of coeliac patients.
abstract: One hundred and sixty-two of 182 patients with coeliac disease provided satisfactory details of family size and the prevalence of coeliac disease and inflammatory bowel disease among their first-degree relatives. Patients ranged in age from 11 months to 79 years with a mean age of 41 (+/- 23) years. Twenty patients had at least one first-degree relative with coeliac disease: a total of 25 of 861 relatives were affected (prevalence = 2904/100,000) compared with an expected 0.9 cases (prevalence = 100/100,000; p less than 0.001). Six relatives had inflammatory bowel disease (prevalence = 697/100,000) compared with an expected 1.3 cases (prevalence = 150/100,000; p less than 0.001). Five of these had ulcerative colitis, and one had Crohn's disease. The relative risk of ulcerative colitis is, therefore, five times greater for first-degree relatives of people with coeliac disease than for the general population (95 per cent confidence interval, 4.7-7.2). There is a clear association between coeliac disease and ulcerative colitis, which may point to factors involved in the aetiology of colitis.
authors.affiliation: Department of Gastroenterology, University Hospital of Wales, Leicester.
authors.forename: A
authors.initials: A
authors.lastname: Shah
authors.forename: J F
authors.initials: JF
authors.lastname: Mayberry
authors.forename: G
authors.initials: G
authors.lastname: Williams
authors.forename: P
authors.initials: P
authors.lastname: Holt
authors.forename: D E
authors.initials: DE
authors.lastname: Loft
authors.forename: J
authors.initials: J
authors.lastname: Rhodes
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002446:Celiac Disease / Q000453:epidemiology* / Q000235:genetics; D002648:Child; D002675:Child, Preschool; D003093:Colitis, Ulcerative / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D015212:Inflammatory Bowel Diseases / Q000453:epidemiology* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors