MAd (version 0.8-3)

r_from_d1: Correlation from Mean Difference II

Description

Converts d (mean difference) reported in primary study to r (correlation coefficient) where sample size of the treatment group is not equal to the sample size of the comparison group (see section 12.5.4, Borenstein, 2009; pp. 234).

Usage

r_from_d1(d, n.1, n.2, var.d)

Value

Computes a correlation coefficient (r).

Arguments

d

Mean difference statistic (d) reported in primary study.

n.1

sample size of group one reported in primary study.

n.2

sample size of group two reported in primary study.

var.d

variance of d reported in primary study.

Author

AC Del Re & William T. Hoyt

Maintainer: AC Del Re

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.

See Also

d_to_g, mean_to_d, mean_to_d2, t_to_d, f_to_d, p_to_d1, p_to_d2, ancova_to_d1, ancova_to_d2, tt.ancova_to_d, f.ancova_to_d, r_to_d, p.ancova_to_d1, p.ancova_to_d2, lor_to_d, prop_to_or, prop_to_d, r_from_chi, r_from_d, r_from_t