Controls of the same type in case-control studies are sometimes used to increase the power of...

Controls of the same type in case-control studies are sometimes used to increase the power of the study.

True

False

Expert Solution

ANSWER: True

Controls of age sex matched with cases increases the power of the study. Controls should come from the same population as cases increase the power of the study.

If controls are almost like cases then the accuracy and power increases. In otherwords we are matching accurately for confounding factors.

A study that compares patients who have a disease or outcome of interest (cases) with patients who do not have the disease or outcome (controls), and looks back retrospectively to compare how frequently the exposure to a risk factor is present in each group to determine the relationship between the risk factor and the disease.

Case control studies are observational because no intervention is attempted and no attempt is made to alter the course of the disease. The goal is to retrospectively determine the exposure to the risk factor of interest from each of the two groups of individuals.

orchestra answered 2 years ago

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