[R] Forest Plot

[Viechtbauer Wolfgang (STAT)]

The figure that you linked to was produced with the "metafor" package. It can also be used to produce a forest plot if you have means and corresponding standard errors of the means. The standard error of a mean is equal to SD / sqrt(n), so as long as you also know the sample sizes (n), you can convert those standard deviations to the standard errors.

Best,

--
Wolfgang Viechtbauer                        http://www.wvbauer.com/
Department of Methodology and Statistics    Tel: +31 (0)43 388-2277
School for Public Health and Primary Care   Office Location:
Maastricht University, P.O. Box 616         Room B2.01 (second floor)
6200 MD Maastricht, The Netherlands         Debyeplein 1 (Randwyck)
________________________________________
From: r-help-bounces at r-project.org [r-help-bounces at r-project.org] On Behalf Of Xin Ge [xingemaillist at gmail.com]
Sent: Sunday, December 06, 2009 12:11 AM
To: r-help at r-project.org
Subject: [R] Forest Plot

Hi All,

I want to produce a similar "Forest Plot" as it is on the following link,
but my data would be having only two columns (one for "Estimate" and other
for "Std. Dev"). Can anyone suggest some function() {Package} which can take
such file as an input and give following forest plot:

http://bm2.genes.nig.ac.jp/RGM2/R_current/library/metafor/man/images/big_plot.rma.uni_001.png

Thanks,
Xin

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