Researchers conducted a cohort study to examine the association between a diet h

Question

Researchers conducted a cohort study to examine the association between a diet high in fat and the risk of colon cancer. The researchers believe that vitamin use may be a confounder but they first need to examine whether or not vitamin use is an effect measure modifier. Does Not Take Vitamin Colon No Colon Colon No Colon Colon No Colon Cancer Cancer Cancer CancerCancer Cancer Takes Vitamin Total High Fat Diet 150 1830 390 254 2220 No High Fat Diet80 150018 800 98 What are the three criteria vitamin use must meet in order to be a potentialconfounder? (you don't have to calculate whether it meets these criteria)

Explanation / Answer

Ans- the three criteria to make vitamin use as a potential confinder are as follows

1) the number of patients of colon cancer should be high in them who takes vitamin along with fats as compared to those who don't take vitamins.

2) the number of the patient of colon cancer should be high for them who takes vitamin without high fat as compared to who doesn't take vitamins.

The number of patients of colon cancer should be high for them who takes vitamins without high fats as compared to them who takes only high fats but no vitamins.

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