[R-meta] Jitter points in the contour-enhanced funnel plot

Guido Schwarzer @c @ending from imbi@uni-freiburg@de
Mon Jul 23 10:38:23 CEST 2018

Dear Angeline,

The easiest way is to (1) copy the meta-analysis object and (2) jitter 
the points in the new meta-analysis object.

Please find attached examples for R packages meta and metafor. Note, as 
metafor saves the variances (list element vi) and the funnel plot shows 
standard errors, you have to jitter the standard errors not variances. 
In meta, standard errors (list element seTE) are directly available.

Best wishes,

Dr. Guido Schwarzer
Institute of Medical Biometry and Statistics,
Faculty of Medicine and Medical Center - University of Freiburg

Postal address: Stefan-Meier-Str. 26, D-79104 Freiburg

Phone: +49/761/203-6668
Mail: sc using imbi.uni-freiburg.de
Homepage: http://www.imbi.uni-freiburg.de

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