Question: If the cases in a case-control study are matched by proportion of characteristics to the controls, the researchers have done . . .If the cases

If the cases in a case-control study are matched by proportion of characteristics to the controls, the researchers have done . . .If the cases in a case-control study are matched by proportion of characteristics to the controls, the researchers have done . . . Question 1 options: Group matching Individual matching Excessive matching No matching

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