Chunk #18 — Results — Small study effects

Source

Risk of neuropsychiatric adverse events associated with varenicline: systematic review and meta-analysis.

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The funnel plots for depression and insomnia are shown in appendix 5. The P values for funnel plot asymmetry were 0.53 for depression and 0.93 for insomnia (that is, there was no evidence against the null hypothesis of no small study effects).