[R-meta] Funnel plot with Egger regression test, using R

Gerta Ruecker Ruecker @ending from imbi@uni-freiburg@de
Wed Nov 28 22:53:24 CET 2018

Dear Ms Sanders,

you could use R package meta. Given your mean differences (say, x) and your standard errors (say, se.x), you obtain a meta-analysis m1 by

m1 <- metagen(s, se.x)

The funnel plot is obtained by


The Egger regression test is done using


Further option see the help functions:
help(package = "meta")

Gerta Rücker
----------------ursprüngliche Nachricht-----------------
Von: margot sanders [sanders.m using hotmail.com ]
An: r-sig-meta-analysis using r-project.org Datum: Wed, 28 Nov 2018 20:49:21 +0000
> I would like to make a funnel plot with Egger regression test. On the x-axis the 
> mean difference (bias) between two methods should be plotted, on the y-axis the 
> standard error.
> I do have the mean difference and standard error. How do I command R to plot these 
> values as x- and y-coordinates in a funnel plot?
> And how do I command R to analyse Egger regression test, based on these values.
> I hope somebody could help me.
> Thank you in advance!
> Greetings M. Sanders
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Gerta Ruecker
Institute of Medical Biometry and Statistics,
Faculty of Medicine and Medical Center - University of Freiburg
Postal Address: Stefan-Meier-Str. 26, 79104 Freiburg
Phone: +49/761/	203-6673
Mail: Ruecker using imbi.uni-freiburg.de Homepage: http://www.imbi.uni-freiburg.de

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