A study is conducted on 8,000 individuals free of diabetes and8,000 individuals with diabetes. The investigators are looking todetermine if a newly marketed drug may prevent diabetes. Amongpatients with diabetes, 1,000 individuals received the new drug.Among patients without diabetes, 2,000 individuals received thedrug.
4a. Construct a 2 by 2 tabledisplaying the combination of diabetics/non-diabetics who areexposed/not exposed.
4b. Calculate an odds ratio andprovide an interpretation
4c. Calculate the relative risk andprovide an interpretation.
4d. If the number of non-diabeticpatients was increased to 800,000, would you expect the answers in2b and 2c to be more or less similar to each other? Explainwhy.
