[R-meta] Subgroup analysis, R package meta

[margot sanders]

I would like to insert a subgroup analysis in the following script for a forest plot in R.

library(meta)
mean.e<-c(-0.4, 0.5,1 ,2)
sd.e<-c(1.63, 2.2, 3, 1)
n.e<-c(29,10, 15, 4)
mean.c<-c(0,0,0,0)
sd.c<-c(0.0001, 0.0001,0.0001,0.0001)
n.c<-c(1000, 1000, 1000, 1000)
studlab<-c("Author a", "Author b", "Author c", "Author d")

meta_nrs<-metacont(n.e,mean.e,sd.e,n.c,mean.c,sd.c,studlab, comb.fixed=F)
print(meta_nrs)

forest.meta(meta_nrs, col.diamond="black", col.diamond.lines="transparent", col.random="transparent")

Does anybody know how to insert a subgroup analysis? The subgroup analysis should present Q- and I2 tests for heterogeneity, as the script already does for the overall results.

Thank you in advance.

Kind regards,
Margot Sanders





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