Background radiation and childhood cancers

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Abstract
Outdoor terrestrial gamma radiation exposure levels (TGR), estimated for each of the 10 km squares of the Great Britain National Grid, were related to local cancer death rates in childhood The examination was based upon the prior hypothesis that an association ought to be detectable This was itself based upon an examination of geographical TGR variations and upon a recently reported recalculation of the dose-response relationship between the risk of childhood cancer and foetal exposure to medical x-rays The analysis was pressed through several stages in which the effects of sociodemographic and medical confounding factors and their temporal changes were identified and separated. TGR was then shown to exert an independent statistically significant effect.