Biostatistics & Research · single question
Which type of bias is most characteristic of this design?
A case-control study relies on participants remembering past exposures.
Show answer and explanation
Correct answer: A. Recall bias
Case-control studies look backward in time, so they are especially prone to recall bias.
- A. Correct. Differential accuracy of memory between cases and controls is the hallmark bias of case-control (retrospective) studies.
- B. Selection bias relates to how subjects are chosen/retained; recall bias is the one tied specifically to remembering exposures.
- C. Lead-time bias applies to screening studies, not exposure recall.
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