Even if the investigators are careful in the selection of cases and controls, se
ID: 180782 • Letter: E
Question
Even if the investigators are careful in the selection of cases and controls, selection bias can make interpretation of results challenging. Which of the following is NOT a situation that can produce selection bias? Choose one best answer.
a. The exposure has some influence on the process by which controls are selected.
The exposure has some influence on the process of case ascertainment.
The disease status has some influence on the recall of exposures.
The exposed cases are reported to registries more than unexposed.
All of the above will produce selection bias.
Explanation / Answer
ANS:
C (The disease status has some influence on the recall of exposures).
Explanation:
Selective recall is a form of information bias, not selection bias.
Selective recall in which basis for evolution and judgment is suggested.
Selection bias is related to the differential participation by exposures and diseases status is less likely to occur in cohort studies.So remaining options A, B and D is a situation that can produce in selection bias
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