Mortality of the Chernobyl emergency workers: analysis of dose response (cohort studies, 1992-2006)

The paper discusses the dynamics in mortality rates and radiation risks of death among the Chernobyl emergency workers who arrived to the Chernobyl zone in 1986 and 1987 for the follow-up period from 1992 to 2006. The total size of the cohort was 47 820 persons and the mean external radiation dose - 128 mGy. The statistically significant radiation risk of death was found for death from all causes (ERR/Gy=0.42; 95% CI: 0.14-0.72), death from solid malignant neoplasms (ERR/Gy=0.74; 95% CI: 0.03-1.76) and death from diseases of the circulatory system (ERR/Gy=1.01; 95% CI: 0.51-1.57).