[Evaluation of radiation and non-radiation factors in the development of lung cancer in radiochemical plant employees].

Five hundred workers of a nuclear facility (162 cases of lung cancer and 338 healthy subjects) were examined on a case-control basis using the logical regression method and 10 radiation and non-radiation factors. Five significant factors were identified. The following rick values were obtained for them: tobacco smoking-6.6; plutonium-associated pneumosclerosis-4.6; plutonium incorporation-3.1; chronic non-specific diseases of the lung-2.1 and gamma ray exposure-1.6. Radiation-associated rick was under 25%, while that of non-radiation factors not less than 70%.