Consider the situation in a case-control study where the, Ask an Expert

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Consider the situation in a case-control study where the crude odds ratio is 4.6, stratum 1 odds ratio is 1, and stratum 2 odds ratio is 3.0. Which of the following is present:

a. Positive confounding

b. Negative confounding

c. Positive confounding and effect modification

d. Negative confounding and effect modification

e. Confounding but no effect modification

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Category:- Statistics and Probability
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