Statistical Software PackagesRcmdrPlugin.MA: Graphical User Interface for Conducting MetaAnalyses
This is an RCommander plugin for metaanalysis. This package enables the user to conduct a metaanalysis in a menudriven, graphical user interface environment (e.g., SPSS). It uses recommended procedures as described in The Handbook of Research Synthesis and MetaAnalysis (Cooper, Hedges, & Valentine, 2009).
compute.es: Compute Effect Sizes
This package contains several functions for calculating the most widely used effect sizes (ES), along with their variances, confidence intervals and pvalues. The output includes ES's of d (mean difference), g (unbiased estimate of d), r (correlation coefficient), z' (Fisher's z), and OR (odds ratio and log odds ratio). In addition, NNT (number needed to treat), U3, CLES (Common Language Effect Size) and Cliff's Delta are computed. This package uses recommended formulas as described in The Handbook of Research Synthesis and MetaAnalysis (Cooper, Hedges, & Valentine, 2009).
MAd: MetaAnalysis with Mean DifferencesThis is an integrated metaanalysis package for conducting a research synthesis with mean differences data. One of the unique features of this package is in its integration of userfriendly functions to facilitate statistical analyses at each stage in a metaanalysis with mean differences.
MAc: MetaAnalysis with CorrelationsThis is an integrated metaanalysis package for conducting a correlational research synthesis. One of the unique features of this package is in its integration of userfriendly functions to facilitate statistical analyses at each stage in a metaanalysis with correlations.

