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A case-control study of 2000 participants looked at the association between an approved drug and gallbladder cancer. The study included 700 cases. There were 200

A case-control study of 2000 participants looked at the association between an approved drug and gallbladder cancer. The study included 700 cases. There were 200 cases and 70 controls taking Tamoxifen. Construct the 2 by 2 table and Calculate the odds ratio for contracting gallbladder cancer in the study.

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