A review of some epidemiological studies on cancer risk from low-dose radiation or other carcinogenic agents |
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Authors: | Ogata Hiromitsu |
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Affiliation: | Center for Information Research, National Institute of Public Health, 2-3-6 Minami, Wako, Saitama 351-0197, Japan. ogata@niph.go.jp |
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Abstract: | It is extremely difficult to assess cancer risks accurately due to health effects of low-dose radiation exposure or other carcinogens based on epidemiological studies. For the detection of minute increases of the risk at low-level exposure, most of epidemiological studies lack statistical power, and they involve various complicated confounding factors. This paper reports on a literature survey of epidemiological studies published since 2000 on cancer risks associated with low-dose radiation and other carcinogens to gather major epidemiological data. Integrated risk indices were derived from those data by using, where possible, statistical models. Regarding risk assessment of low-dose radiation exposure, it is important to lower the degree of uncertainty arising from risk estimation. Risk assessment of low-dose radiation exposure could be scientific evidence when uncertainty is considered in comparing carcinogenic risks of radiation with those of other carcinogens. |
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