[R-meta] Question about rma(measure = "COR", ..)

[Jalynskij, Maria]

Dear all,


while conducting a meta-analysis I asked myself a few questions.


a)When I'm conduction a random effects meta-analysis with correlation-coefficients as effects sizes using


rma(measure = "COR", ri = corr, ni = n, data = data)

, does R conduct the analysis with Fisher's-z-transformed coefficients in the background and compute the main-effect results back into the r metric for the output or not?


b) Or should I use rma(measure="ZCOR", ri = corr, ni = n, data = data), and conduct the main result back by myown at the end?


In the second version the Trim and Fill method doesn't make any sense.


I would be glad about some support.


Sincerely,

Maria



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