[R-meta] (no subject)

Dear All,

Hi, everyone! I am currently taking the multilevel meta-analysis where effect sizes can be nested in studies. I am wondering how to get  the I2 index for hetegeneity test as well as R square of the moderator analysis under rma.mv function.  What are the codes to calculate those values?

res1 <- rma.mv(yi = yi,
               V = vi,
               test="t",
               mod=~ mod1
               random = list(~ 1 | Study_ID, ~ 1 | Study_ID/correlation_ID),
               data = es)
res1

the fitstats function did not give  R square.

Thank you for your attention.

Best Wishes

Shuyi (Qiao)