Calculate Hedges' g using means and standard deviations

Calculate Hedges' g using Mean and Standard Deviation. Only meant to be used as part of calculateEffectSizes.

Usage

g.m.sd(x, ...)

Arguments

x

data

...

Effect size data. Data frame must include columns mean_arm1, mean_arm2, sd_arm1, sd_arm2, n_arm1, n_arm2. See the Metapsy data standard.