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In a Case-Control Study, Why Are the Cases and Controls

Question 16

Multiple Choice

In a case-control study, why are the cases and controls often matched on variables such as age and sex?


A) So that cases and controls are similar except for the disease and health characteristic under study
B) So that cases and controls are similar for all aspects of the study
C) So that cases and controls are similar except for the disease under study only
D) So that cases and controls are similar except for the health characteristic only

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