Question: 2) In a case-control study, cases and controls are defined by the: (Select one best answer Answers: A - D A presence or absence of

2) In a case-control study, cases and controls are defined by the: (Select one best answer

Answers: A - D

A presence or absence of the experimental drug

B presence or absence of the exposure (or risk factor)

C presence or absence of the outcome (or disease)

D presence or absence of a confounding factor

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