Methods for Dealing with Multiple Outcomes in Meta-Analysis: A Comparison between Averaging Effect Sizes, Robust Variance Estimation and Multilevel Meta-Analysis

Autor/inn/en	Moeyaert, Mariola; Ugille, Maaike; Natasha Beretvas, S.; Ferron, John; Bunuan, Rommel; Van den Noortgate, Wim
Titel	Methods for Dealing with Multiple Outcomes in Meta-Analysis: A Comparison between Averaging Effect Sizes, Robust Variance Estimation and Multilevel Meta-Analysis
Quelle	In: International Journal of Social Research Methodology, 20 (2017) 6, S.559-572 (14 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	Weitere Informationen
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1364-5579
DOI	10.1080/13645579.2016.1252189
Schlagwörter	Meta Analysis; Effect Size; Robustness (Statistics); Hierarchical Linear Modeling; Computation; Comparative Analysis + Suchen Sie Ihr Suchwort? Meta-analysis; Metaanalyse; Widerstandsfähigkeit
Abstract	This study investigates three methods to handle dependency among effect size estimates in meta-analysis arising from studies reporting multiple outcome measures taken on the same sample. The three-level approach is compared with the method of robust variance estimation, and with averaging effects within studies. A simulation study is performed, and the fixed and random effect estimates of the three methods are compared with each other. Both the robust variance estimation and three-level approach result in unbiased estimates of the fixed effects, corresponding standard errors and variances. Averaging effect sizes results in overestimated standard errors when the effect sizes within studies are truly independent. Although the robust variance and three-level approach are more complicated to use, they have the advantage that they do not require an estimate of the correlation between outcomes, and they still result in unbiased parameter estimates. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01