Means to Standardized Mean Difference
Converts raw mean scores reported in the primary study to a standardized mean difference (d).
mean_to_d(m.1, m.2, sd.1, sd.2, n.1, n.2)
m.1
: Mean of group one.m.2
: Mean of group two.sd.1
: Standard deviation of group one.sd.2
: Standard deviation of group two.n.1
: Sample size of group one.n.2
: Sample size of group two.d: Standardized mean difference (d).
var.d: Variance of d.
AC Del Re & William T. Hoyt
Maintainer: AC Del Re acdelre@gmail.com
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.
d_to_g
, 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_d1
, r_from_t