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Table 1 UVB estimate in association with crude incidence rate of CRC using polynomial regression for countries in northern hemisphere

From: Could age increase the strength of inverse association between ultraviolet B exposure and colorectal cancer?

Age groups Regression Coefficient P-value
(overall)
R2
(overall)
UVB UVB^2
>/= 75 years − 0.49 − 0.004 <  0.001 0.62