Life Table Methodology for Evaluating Radiation Risk

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Abstract
An application of the life table method for examining the risk of death from exposure to low-level ionizing radiation was described. The method provided estimates of the expectation of premature death and the resultant life shortening. Applications to occupational exposure situations demonstrated the technique. Doses ranging from 0.2-5.0 rem/yr and over age spans from 10 yr to working lifetimes were investigated. A technique for comparing radiation related mortality with non-radiation related risk of death from on-the-job accidents was introduced. Workers receiving whole body doses equal to 5 rem/yr for sustained periods of time incurred significant risk of premature death from radiation induced cancer. The risk was estimated in some cases to be as high as or higher than average risk of accidental death in high risk industries, depending on factors such as length of exposure, age at time of exposure and radiation risk model used.

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