[R-meta] Calculate individual SDs from ES's SDs
jepusto at gmail.com
Mon Feb 26 15:45:28 CET 2018
I would hazard a guess that the +/- 0.07, which is described as "SD", might
actually be the standard error of the effect size estimate. So in the
example, ES = 1.38 and sampling variance = 0.07^2 = 0.049. Perhaps you can
verify this speculation using other information in the source document.
On Wed, Feb 21, 2018 at 6:41 AM, Cesar Terrer Moreno <cesar.terrer at me.com>
> Dear all,
> I have a series of effects sizes, expressed as e.g.:
> 1.38 ± 0.07 (MEANexp/MEANcontrol, SD, n=3)
> I have to express these experiments as MEANexp, SDexp, MEANcontrol,
> SDcontrol in order to put all data in a correct formar that can be read by
> escalc in metafor.
> I guess I can assume MEANexp = 1.38 and MEANcontrol = 1, but how can I
> compute SDs so that escalc computes the effect size’s variance properly?
> R-sig-meta-analysis mailing list
> R-sig-meta-analysis at r-project.org
[[alternative HTML version deleted]]
More information about the R-sig-meta-analysis