| http://www.w3.org/ns/prov#value | - Of particular interest is whether the conditional rate of adenomas at year 5 differs by treatment group and strata with control for potential differences in these groups by adenoma history at year 3 colonoscopy, age, sex, family history of colorectal cancer, smoking, concomitant use of NSAID's, total time on study drug, and other covariates.
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