Andmebaasiga Scopus teostatud otsingud
exposures. We conducted an ecological study in a small town in Japan where the groundwater with
high concentrations of radon is supplied as utilities. A total of 607 cancer deaths were ascertained by
vital statistics in that town from 1972 to 1997. Standardized mortality ratios on the basis of national
rates were 1.01 (95% confidence interval; 0.93-1.09) for all cancers, 1.10 (0.95-1.28) for
stomach cancer, 0.88 (0.70-1.10) for lung cancer, and 1.14 (0.87-1.48) for liver cancer. Mortality from
livercancer was significantly higher than that of two surrounding control cities combined, with a
relative risk of 1.40 (1.04-1.89) based on Poisson regression analysis. Lack of information on possible
confounders including diet, alcohol drinking, smoking and hepatitis virus infection, is the main limitation
of the study, which precludes the evaluation of causal associations. © 2008 American Institute of
Physics.
Yoshinaga, S., Ishikawa, T., Tokonami, S., Mizoue, T., Narazaki, Y., Mizuno, S., Akiba, S
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