In a meta-analysis, a funnel plot is used to detect:
- A Confounding bias
- B Publication bias ✓
- C Information bias
- D Berkson bias
Correct answer: B. Publication bias
Explanation
A funnel plot displays study effect sizes against their precision (sample size or standard error). Asymmetry in the funnel plot suggests publication bias, where small negative studies are less likely to be published. Egger's test and Begg's test formally test for funnel plot asymmetry.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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