[R-meta] Metafor: Risk difference, forest plot

[m@rc@h@rms m@iii@g oii mh-@@@iytics@eu]

Hi all, I have a question reg the layout of a forest plot in metafor:

 

I am struggling with the scale of the axis for the risk difference, see
image below. The scale of the effect size is ranging from -0.3 to 0.3, for
which I am using at=c(-0.3, 0.3). 

How can I "extend" the space for the axis for the risk difference so that
one can better see the CIs and symbols - it looks very narrow and squeezed?
Please see the code I am using below. Thanks for your help!! Marc

 

forest(res, 

       at=c(-0.3, 0.3),

       xlim=c(-20,2),

       ilab=cbind(ICG_SLN, ICG_total, RI_SLN, RI_total), 

       ilab.xpos=c(-13.5,-12,-10,-8.5),

       cex=.75, 

       header="Author(s) and Year", 

       mlab="", 

       textpos=c(-20,-3.5)

       )

 




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