Which of the following statements is true about case-control designs?
A)They rarely are feasible.
B)Data must be collected at multiple points in time.
C)Retrospective data are collected about past differences that might explain differences in outcome.
D)We usually can be highly confident about their internal and external validity.
E)We usually can be highly confident about the direction of causal influence.

Question

Quizplus · Accepted Answer

Case-control designs involve retrospective data collection, meaning data about past differences are collected to explain differences in outcomes. Option A is incorrect because case-control designs are a common type of study design used in research. Option B is incorrect because data do not necessarily need to be collected at multiple points in time. Option D is incorrect because internal and external validity can vary depending on the specific study design and methods used. Option E is incorrect because case-control designs do not necessarily establish causal relationships.

Which of the Following Statements Is True About Case-Control Designs