Meta-Analysis -------------------------------------------- **Introduction** *"Meta-analysis is the quantitative, scientific synthesis of research results. Since the term and modern approaches to research synthesis were first introduced in the 1970s, meta-analysis has had a revolutionary effect in many scientific fields, helping to establish evidence-based practice and to resolve seemingly contradictory research outcomes."* [(Gurevitch, Koricheva, Nakagawa & Stewart, 2018)][1] ------ This is a good place to start for an overview and guide to conducting a meta-analysis: - [See Meta-Analysis Notes (DeCoster, 2004)][2] ------ **Methodology & Applications** - Trim and Fill Method - [Performance of The Trim and Fill Method in The Presence of Publication Bias and Between-Study Heterogeneity (Peters, Sutton, Jones, Abrams, Rushton, 2007)][3] - Application of *p*-uniform, a method that enables (a) testing of publication bias, (b) effect sizeestimation, and (c) testing of the null-hypothesis of no effect. - [Meta-Analysis Using Effect Size Distributions of Only Statistically Significant Studies (van Assen, van Aert, & Wicherts, 2015)][4] [1]: https://www.nature.com/articles/nature25753 [2]: http://www.stat-help.com/meta.pdf [3]: https://www.ncbi.nlm.nih.gov/pubmed/17476644 [4]: https://www.ncbi.nlm.nih.gov/pubmed/25401773