Outlier and influence diagnostics for meta-analysis

作者：Wolfgang Viechtbauer, Mike W.‐L. Cheung · 发表于：Research Synthesis Methods · 年份：2010 · DOI：10.1002/jrsm.11 · 被引用次数：2965 · 研究领域：Advanced Statistical Methods and Models

The presence of outliers and influential cases may affect the validity and robustness of the conclusions from a meta-analysis. While researchers generally agree that it is necessary to examine outlier and influential case diagnostics when conducting a meta-analysis, limited studies have addressed how to obtain such diagnostic measures in the context of a meta-analysis. The present paper extends standard diagnostic procedures developed for linear regression analyses to the meta-analytic fixed- and random/mixed-effects models. Three examples are used to illustrate the usefulness of these procedures in various research settings. Issues related to these diagnostic procedures in meta-analysis are also discussed. Copyright © 2010 John Wiley & Sons, Ltd.