a similar regression model in which % fev1 was replaced with the ratio of fev1 to fvc ( fev1/fvc ) showed that lowered fev1/fvc was also a significant predictor of lung cancer death , the subjects with fev1/fvc less than 0.6 ( 0.6 to 0.7 ) having a 2.6 ( 1.5 ) higher risk for lung cancer death than those with fev1/fvc greater than or equal to 0.7 .
C0242379
of lung
C0024109
lung