Converts a one-tailed p-value from ANCOVA reported in the primary study to a standardized mean difference (d)
p.ancova_to_d1(p, n.1, n.2, R, q)
One-tailed p-value reported in primary study.
Treatment group sample size.
Comparison group sample size.
Covariate outcome correlation or multiple correlation.
number of covariates.
Standardized mean difference (d).
Variance of d.
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_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_d2
,
lor_to_d
,
prop_to_or
,
prop_to_d
,
r_from_chi
,
r_from_d
,
r_from_d1
,
r_from_t