Which best describes a prospective study?
A) Descriptive study in which participants are enrolled before the health outcome of interest has occurred
B) Analytic study in which participants are enrolled before the health outcome of interest has occurred
C) Descriptive study in which participants are enrolled after the health outcome of interest has occurred
D) Analytic study in which participants are enrolled after the health outcome of interest has occurred
Ans: B
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A prospective study is an analytic study in which participants are enrolled before the health outcome of interest has occurred. A retrospective study is an analytic study in which participants are enrolled after the health outcome of interest has occurred.
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