Allowing equal interview time to cases and controls can reduce which of the following bias?
Correct Answer: Interviewer bias
Description: Bias: - Type of systematic error. - Subject bias - Recall bias ; Hawthorn bias . - Investigatory bias: Interviewer bias, selection bias, misclassification bias. Allowing equal time for interview can take care of interviewer bias to some extent. Interviewer bias happens in case-control studies where the interviewer knows about the disease status of the person and probes more for exposure amongst cases as compared to controls. - Analyzer bias : Calculation bias - not seen now a days.
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Social & Preventive Medicine
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