Colorectal polyp 602 Subject

Witte etal. (1996) used case-control data from 488 matched pairs to evaluate associations of vegetables, fhiits, and grains with colorectal polyps. Subjects were southern Californians aged 50-74 years who had a sigmoidoscopy between 1991 and 1993. The authors found inverse associations between garlie eonsumption and number of incidence with polyps. 

In a pooled analysis (88) of three studies (Wheat Bran Fiber Trial Polyp Prevention Trial Polyp Prevention Study) subjects with colorectal adenoma and Se levels in the highest quartile (median 150 ng/ml ) had significant lower odds of developing new adenoma compared with those in the lowest quartile (median I 13 ng/mL),... 

A case-control study was designed to explore risk factors for colorectal adenomas. Adenomas are precursors to 80-90% of all colorectal cancers. The study used 236 cases (with adenomas or polyps) and 409 controls (no adenomas) (Tseng ef aF., 1996) (Tabic 11,2). All subjects were patients receiving colonoscopy exams. The subjects were not recruited from the general public, A month or so after the exam, the subjects were asked to fill out a food choice questionnaire. 

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