Use of indoor radon data to analyze the effectiveness of radon risk prediction based on geochemical and geologic proxy data for the state of Georgia
Freeman, Joelle Marie
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Linear regression of indoor radon data from the Georgia Radon Education Program indicates that only a minor amount (R2 = .065) of the geographic variation in radon concentration is explained by geologic characteristics, soil properties, and radioactivity data for the state. 95% confidence intervals for the mean radon concentrations of the primary rock types in Georgia commonly overlap and are of limited use. Therefore, despite efforts made since the 1970s to identify relationships between geologic characteristics, soil properties, radioactivity data, and this known carcinogen, the occurrence of elevated indoor radon remains poorly understood. Existing radon risk maps for Georgia derived from these proxy variables are of questionable value for targeting the increasingly limited public resources available for radon risk initiatives. More effective risk assessment methods must be developed in order to effectively reduce lung cancer fatalities from naturally-occurring radon in Georgia.