esc_f {esc}  R Documentation 
Compute effect size from Oneway Anova with two independent groups.
esc_f( f, totaln, grp1n, grp2n, es.type = c("d", "g", "or", "logit", "r", "f", "eta", "cox.or", "cox.log"), study = NULL )
f 
The Fvalue of the Ftest. 
totaln 
Total sample size. Either 
grp1n 
Treatment group sample size. 
grp2n 
Control group sample size. 
es.type 
Type of effect size that should be returned.

study 
Optional string with the study name. Using 
The effect size es
, the standard error se
, the variance
of the effect size var
, the lower and upper confidence limits
ci.lo
and ci.hi
, the weight factor w
and the
total sample size totaln
.
This function only applies to oneway Anova Ftests with
two independent groups, either equal or unequal sample sizes.
If es.type = "r"
, Fisher's transformation for the effect size
r
and their confidence intervals are also returned.
Lipsey MW, Wilson DB. 2001. Practical metaanalysis. Thousand Oaks, Calif: Sage Publications
Wilson DB. 2016. Formulas Used by the "Practical MetaAnalysis Effect Size Calculator". Unpublished manuscript: George Mason University
# unequal sample size esc_f(f = 5.5, grp1n = 100, grp2n = 150) # equal sample size esc_f(f = 5.5, totaln = 200)