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http://dx.doi.org/10.1667/RR00HM.1 | DOI Listing |
Radiat Res
February 2003
Radiation Effects Association, Kajicho, Chiyodaku, Tokyo, 101-0044, Japan.
IA cohort study of nuclear industry workers was initiated in 1990 to determine the possible health effects of low-level radiation. A total of 5,527 deaths were ascertained among 176,000 male workers who had been retrospectively and/or prospectively followed for an average of 7.9 years during the observation period 1986-1997.
View Article and Find Full Text PDFJ Epidemiol
July 2002
Institute of Radiation Epidemiology, Radiation Effects Association, Tokyo, Japan.
To examine confounding on the risk assessment of the radiation workers at nuclear facilities in Japan, a questionnaire survey of their characteristics such as life-style and occupational history was performed for 54,369 male and 470 female workers who were currently engaged in the job and valid answers were obtained from 48,281 males and 428 females. In order to know whether these characteristics were different among different dose groups, the Mantel extension statistical test was performed only for male respondents, with cumulative radiation doses stratified into 5 classes. Increasing trend according to the increasing doses was statistically significant for the percentages of tobacco smokers and of heavy smokers.
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