metatest (version 1.0-5)

transformations: Transform effect sizes.

Description

Utility functions to transform various effect size measures into each other.

Usage

r2z(r)
r2d(r)
z2r(z)
z2d(z)

Arguments

r

A correlation coefficient.

z

A z-value, ie a normalized effect size.

Value

Return values are z, d or r values.

Details

Transform effect sizes into correlations, (Cohen's) d effect sizes, or z-distributed for performing meta regression.

References

Tba

Examples

# NOT RUN {
## The function r2z is currently defined as
function(r) {
	return(0.5*(log(1+r)-log(1-r)))
  }
# }