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compute.es (version 0.2-2)

Compute Effect Sizes

Description

This package contains several functions 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).

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Version

Install

install.packages('compute.es')

Monthly Downloads

3,224

Version

0.2-2

License

GPL-2

Maintainer

AC Re

Last Published

October 19th, 2013

Functions in compute.es (0.2-2)

fes

F-test to Effect Size
pes

p-value to Effect Size
a.pes

One or Two-tailed p-value from ANCOVA to Effect Size
propes

Proportions to Effect Size
a.mes2

Mean Values from ANCOVA F-statistic with Pooled SD to Effect Size
ztor

Internal anRpackage objects
compute.es-package

Compute Effect Sizes
mes2

Means with Pooled SD to Effect Size
failes

Failure groups to Effect Size
lores

Log Odds Ratio to Standardized Mean Difference (d)
mes

Means to Effect Size
des

Mean Difference (d) to Effect size
res

Correlation coefficient (r) to Effect Size
a.fes

ANCOVA F-statistic to Effect Size
a.tes

t-test Value from ANCOVA to Effect Size
chies

Chi-Squared Statistic to Effect Size
tes

t-test Value to Effect Size
a.mes

Mean Values from ANCOVA F-statistic to Effect Size