To the Editor: Pollack et al. (March 8 issue)* report a cohort study in which they claim to establish an etiologic association between alcohol consumption and the subsequent development of rectal carcinoma. In fact, their data appear to provide clear evidence against such an association. In Figure 1 of the article, the authors demonstrate that the observed association between alcohol consumption and rectal carcinoma is accounted for entirely by an association between the latter and beer consumption. Indeed, in only 1 of 10 alcohol-consumption categories (beer intake of more than 500 oz per month) is there a relative risk of.
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