Message-ID: <1321066307931-4033414.post@n4.nabble.com>
Date: 2011-11-12T02:51:47Z
From: Frank E Harrell Jr
Subject: Odds ratios from lrm plot
In-Reply-To: <1321063699793-4033340.post@n4.nabble.com>
The Design package is obsolete. Use its replacement rms - see
http://biostat.mc.vanderbilt.edu/Rrms. Use something like the following to
reproduce what you already have:
To plot odds ratios against a specific value of x2 and at a specific x1,
type ?contrast.rms to see examples.
Frank
RD235 wrote:
>
> The code
>
> library(Design)
> f <- lrm(y~x1+x2+x1*x2, data=data)
> plot(f)
>
> produces a plot of log odds vs x2 with 0.95 confidence intervals. How do I
> get a plot of odds ratios vs x2 instead?
>
> Thanks
>
-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
--
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