Hi Dr. Viechtbauer,

I'm doing meta-analysis using your package 'metafor'. I used the 'IRFT' to transform the incident rate. But when I tried to back-transform the summary estimates from function rma, I don't know what's the appropriate ti to feed in function transf.iirft. I searched and found your post about using harmonic mean for ni  to back-transform the double arcsine  transformation. I'm hoping I can get your help on ti too.

Thanks.


Chunyan Liu

513-636-9763
Biostatistician II
Department of Biostatistics and Epidemiology
Cincinnati Children's Hospital Medical Center


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