Abstract
The new Mayak Worker Dosimetry System 2008 (MWDS-2008) was published in 2013 and supersedes the Doses-2005 dosimetry system for Mayak Production Association (PA) workers. It provides revised external and internal dose estimates based on the updated occupational history data. Using MWDS-2008, a cohort of 18,856 workers first employed at one of the main Mayak PA plants during 1948–1972 and followed up to 2005 was identified. Incidence and mortality risks from ischemic heart disease (IHD) (International Classification of Diseases (ICD)-9 codes 410–414) and from cerebrovascular diseases (CVD) (ICD-9 codes 430–438) were examined in this cohort and compared with previously published risk estimates in the same cohort based on the Doses-2005 dosimetry system. Significant associations were observed between doses from external gamma-rays and IHD and CVD incidence and also between internal doses from alpha-radiation and IHD mortality and CVD incidence. The estimates of excess relative risk (ERR)/Gy were consistent with those estimates from the previous studies based on Doses-2005 system apart from the relationship between CVD incidence and internal liver dose where the ERR/Gy based on MWDS-2008 was just over three times higher than the corresponding estimate based on Doses-2005 system. Adjustment for smoking status did not show any effect on the estimates of risk from internal alpha-particle exposure.
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Notes
The “never smokers” are workers, who have claimed to be never smokers at several medical examinations.
The “never drinkers” are workers, who have claimed to be never drinkers at several medical examinations.
The condition was considered as hypertension if blood pressure exceeded 140/90 mm Hg.
The “normal body mass index” is equal to 18.5–24.99 kg per m2.
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This work was supported in part by the European Commission of the 7 Framework Program under the SOLO project (Epidemiological Studies of Exposed Southern Urals Populations) [Grant Agreement No: 249675].
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Moseeva, M.B., Azizova, T.V., Grigoryeva, E.S. et al. Risks of circulatory diseases among Mayak PA workers with radiation doses estimated using the improved Mayak Worker Dosimetry System 2008. Radiat Environ Biophys 53, 469–477 (2014). https://doi.org/10.1007/s00411-014-0517-x
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DOI: https://doi.org/10.1007/s00411-014-0517-x