Statistical Software PackagesRcmdrPlugin.MA: Graphical User Interface for Conducting MetaAnalyses
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 DifferencesA metaanalysis package for conducting a metaanalysis 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 CorrelationsA metaanalysis package for conducting a correlational metaanalysis. 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.

