E156 Project

Outcome Reporting Bias Risk in 403 Cochrane Meta-Analyses: An Excess Significance Approach

Mahmood Ahmad · Meta-Research · 2026-03-26

One in six Cochrane reviews shows statistical indicators consistent with elevated outcome reporting bias risk based on excess significance testing of 403 reviews.

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Outcome Reporting Bias Risk in 403 Cochrane Meta-Analyses: An Excess Significance Approach

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