Dear list members,
I am conducting a meta-analysis on the heritability of a trait as manifested in twin studies. Specifically, in twin studies, it is possible to derive the standardized regression coefficient of genes on a given trait (the genetic component is a latent variable that could not be directly observed). Thus, my outcome measure is a standardized regression coefficient. More specifically, it is a partial standardized regression coefficient since, in all the studies, there are exactly three variables that can affect the trait (genes, shared environment, and non-shared environment).
My question is: Is it possible to use partial standardized regression coefficient as an outcome measure in the 'metafor' package? If so, how can I do it? Is it reasonable to treat it like a correlation in terms of the syntax (i.e., to write measure="ZCOR" / measure ="COR")?
Thank you very much for your time and help,
Lior
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