title: A case-control study of occupational exposures and leukaemia.
abstract: Between 1955 and 1974, 138 cases of leukaemia occurred in residents of Olmsted County, Minnesota. Each case was compared with 2 control subjects matched for age, sex, and residence with regard to their occupational and chemical exposures before the diagnosis of leukaemia. Farming and health-related occupations have been previosly implicated in the development of leukaemia and occurred frequently enough in our group of patients and control subjects to permit analysis. Neither of these 2 occupations occurred more frequently enough in our group of patients and control subjects to permit analysis. Neither of these 2 occupations occurred more frequently in cases than in control subjects.
mesh_terms: D000383:Agriculture; D001554:Benzene / Q000506:poisoning; D004812:Epidemiologic Methods; D005260:Female; D006281:Health Occupations; D006801:Humans; D007938:Leukemia / Q000139:chemically induced / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D009784:Occupational Diseases / Q000453:epidemiology*
chemical_list: D001554:Benzene