A Case-Control Study of Occupational Exposures and Leukaemia

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Abstract
Linos A [Department of Medical Statistics and Epidemiology, Mayo Clinic, Rochester MN 55901, USA], Kyle R A, O'Fallon W M and Kurland L T. A case-control study of occupational exposures and leukaemia. International Journal of Epidemiology 1980, 9: 131–135. 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 previously 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 in cases than in control subjects.