Question: What are some guidelines for selecting cases and controls? In a case control study, investigators found that among 1000 women (cases of breast cancer), 250

What are some guidelines for selecting cases and controls? In a case control study, investigators found that among 1000 women (cases of breast cancer), 250 had exposed to oral contraceptive use and 750 had not. Of the 10,000 women (control) 3000 had used oral contraceptive and 7000 had not. How do you measure the association? Show your work with 2 by 2 tables. What is the interpretation

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