Correlation between regional oncological mortality and natural radiation background in the CSR

On the basis of published geological data (maps) an attempt was made to correlate the regional distribution of oncological mortality with the dose rate of the natural radiation background in the Czech Socialist Republic. No relationship was observed between the two parameters in the whole area of the CSR; for districts with an increased dose rate of the background or with high mortality the statistical relationship proved an inverse relationship: the higher the background dose rate the lower the oncological mortality and vice versa. (author). 3 figs., 1 tab., 22 refs