Lung cancer incidence decreases with elevation: evidence for oxygen as an inhaled carcinogen.

Results Strong, negative association between elevation & lung cancer incidence Performing best subset regression for each cancer, we found a highly significant, strong negative association between elevation and lung cancer incidence with a standardized coefficient ( β z ) of −0.35 99% CI [−0.46, −0.25] ( p < 10 −16 , one-tailed t -test) ( Table 2 ).

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