MAc: p_to_d2 – R documentation

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p_to_d2

Two-tailed p-value to Standardized Mean Difference (d)

Description

One-tailed p-value reported in primary study to Standardized Mean Difference (d)

Usage

p_to_d2(p, n.1, n.2)

Arguments

`p`	Two-tailed p-value reported in primary study.
`n.1`	Sample size of treatment group.
`n.2`	Sample size of comparison group.

Value

`d`	Standardized mean difference (d).
`var_d`	Variance of d.

Author(s)

AC Del Re & William T. Hoyt

Maintainer: AC Del Re acdelre@gmail.com

References

Borenstein (2009). Effect sizes for continuous data. In H. Cooper, L. V. Hedges, & J. C. Valentine (Eds.), The handbook of research synthesis and meta analysis (pp. 279-293). New York: Russell Sage Foundation.