Biostatistics & Research · single question
Bias arising from how participants are chosen and retained in a study is:
Show answer and explanation
Correct answer: A. Sampling/selection bias
Choosing/retaining subjects → selection (sampling) bias.
- A. Correct. Systematic error in selecting or retaining subjects is selection (sampling) bias.
- B. Confounding is a third-variable distortion of the exposure–outcome relationship.
- C. Recall bias is about differential memory of exposures, not subject selection.
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