[R-meta] integrating SMD, ZCOR and ZPCOR

Michael Dewey li@t@ @ending from dewey@myzen@co@uk
Tue Aug 28 13:22:30 CEST 2018

Dear Katrin

If I were using different effect size types I would regard it as almost 
obligatory to include a categorical moderator to differentiate them. 
However in this case they are so different that I would begin to doubt 
the desirability of doing one overall analysis.


On 28/08/2018 10:07, Wolf, Katrin wrote:
> Dear all,
> With the "escalc" function I calculated different effect sizes depending on the existing data (SMD, ZCOR, ZPCOR). For obtaining overall effects, can I treat the resulting yi in the same way? I mean, can I just integrate them in my random effect model by the "rma.uni" function without specifying what kind of effect size it is?
> And how to interpret resulting overall effect sizes? Can these be interpreted like Cohen's d?
> Kind regards,
> Katrin

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