Several functions are available for calculating the most widely used effect sizes (ES), along with their variances, confidence intervals and p-values. 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 Meta-Analysis (Cooper, Hedges, & Valentine, 2009).
o Changed calculation of NNT to Furukawa and Leucht's (2011) procedure. o Added cer and verbose arguments (see documentation for details). o Changed documentation accordingly.
o Fixed bug that did not allow output to be saved as object for single value inputs. o Added simple examples for running functions in the documentation. o Minor clarifications to function arguments based on user feedback
o Effect sizes can now be calculated from both scalar values and vector data. o Functions will now output confidence intervals, and p-values, along with NNT (number needed to treat), U3 (Cohen's U_3 distribution overlap statistic), CLES (Common Language Effect Size) and Cliff's Delta (success rate difference).
o More user friendly output than previous versions o Documentation changed accordingly.