[R] perform subgroup meta-analysis and create forest plot displaying subgroups

[Weiss, Bernd]

Steven Lubitz schrieb:
> Hello, I'm using the rmeta package to perform a meta analysis using
> summary statistics rather than raw data, and would like to analyze
> the effects in three different subgroups of my data. Furthermore, I'd
> like to plot this on one forest plot, with corresponding summary
> weighted averages of the effects displayed beneath each subgroup.
> 
> I am able to generate the subgroup analyses by simply performing 3
> separate meta-analyses with the desired subset of data. However, I
> can't manage to plot everything on the same forest plot.

Maybe I'm wrong but the 'forest'-function (package 'meta', 
<http://cran.at.r-project.org/web/packages/meta/meta.pdf>) should be 
able to do what you want. I guess you could be interested in the 'byvar' 
argument.

Bernd