Mortality in Chernobyl clean-up workers: analysis of dose-effect relationship

«Radiation and Risk», 2006, vol. 15, No. 1-2, pp.11-21


Ivanov V.K., Tumanov K.A., Kashcheev V.V., Tsyb A.F., Marchenko T.A.1, Chekin S.Yu., Maksioutov M.A., Petrov A.V., Biryukov A.P.
Medical Radiological Research Center of RAMS, Obninsk.
1Department for Infrastructure Development, EMERCOM of Russia, Moscow.


In the article dynamics of mortality rates and radiation mortality risks in Chernobyl clean-up workers (liquidators) for the period from 1992 over 2002 is analyzed. Total cohort size is 61 017 persons. Statistically significant (p=0.03) radiation risk (ERR) from external radiation for dying from all cancers except for neoplasms of lymphoid and hematopoietic tissues was found in liquidators of the first year following the Chernobyl accident. The risk magnitude is 1.52/Gy (95% CI: 0.20-2.85). 125 cases (95% CI: 20-200) or 19% (95% CI: 3-31%) of 651 registered deaths from cancer were related to external radiation dose. Positive dose-related trend from exposure to external radiation in mortality from bronchuses and lung cancers (ERR=1.89; 95% CI: -1.34-5.12), and non-cancer diseases, such as cardiac deficiency (ERR=0.71; 95% CI: -0.06-2.04) and cerebrovascular diseases (ERR=1.79; 95% CI: -0.12-3.72) was found.

Key words
Dynamics of mortality rates, radiation risks, mortality, Chernobyl clean-up workers, liquidators, Chernobyl accident, malignant neoplasms, external radiation dose, cerebrovascular diseases, lung cancer, non-cancer diseases.


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