What does this table tell us? First, we see a tremendous difference in the relative risks for lung cancer and for CHD in relation to smoking—14.0 for lung cancer compared with 1.6 for CHD (i.e., a much stronger association exists for smoking and lung cancer than for smoking and CHD). However, the attributable risk is almost twice as high (256) for CHD as it is for lung cancer (130). If we choose to express the attributable risk as a proportion, we find that 92.9% of lung cancer deaths in smokers can be attributed to smoking (and are potentially preventable by eliminating smoking) compared with only 38.3% of deaths from CHD in smokers that can be attributed to smoking.