title: Method of the cohort study--a practical example.
abstract: The method is demonstrated in connection with a study of lung cancer among metal-workers exposed to oil mist. As exposure to oil mist is uncommon and lung cancer is common, the cohort study is the method of choice. Estimation of exposure, problems of selection, calculation of person-years etc is discussed. There was no increased morbidity from lung cancer.
mesh_terms: D000328:Adult; D000336:Aerosols; D000368:Aged; D004812:Epidemiologic Methods; D006801:Humans; D006838:Hydrocarbons / Q000009:adverse effects; D008175:Lung Neoplasms / Q000139:chemically induced* / Q000401:mortality; D008297:Male; D008670:Metals / Q000009:adverse effects*; D008875:Middle Aged; D009784:Occupational Diseases / Q000139:chemically induced* / Q000401:mortality; D009821:Oils / Q000009:adverse effects*; D013548:Sweden
chemical_list: D000336:Aerosols; D006838:Hydrocarbons; D008670:Metals; D009821:Oils