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st: RE: Power analysis in STATA


From   "David Radwin" <dradwin@mprinc.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Power analysis in STATA
Date   Wed, 15 Jun 2011 07:54:00 -0700 (PDT)

Martie,

I don't know how to solve your problem in -powercal-, but if it doesn't
work for you and you don't want to program your own graph, maybe it's time
to try another software package such as G*Power, which is menu driven and
has some nice graphing capabilities including sample size on the x-axis.
It is free and runs on Windows or Mac.

http://www.psycho.uni-duesseldorf.de/abteilungen/aap/gpower3/

David
--
David Radwin
Research Associate
MPR Associates, Inc.
2150 Shattuck Ave., Suite 800
Berkeley, CA 94704
Phone: 510-849-4942
Fax: 510-849-0794

www.mprinc.com


> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-
> statalist@hsphsun2.harvard.edu] On Behalf Of martine etienne
> Sent: Wednesday, June 15, 2011 12:15 AM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Power analysis in STATA
> 
> Dear statlisters,
> I tried the powercal command in stata but was wondering if there was a
way
> I
> could generate a graphical form of the power calculation with the x axis
> being
> the sample sizes NOT the logratio?
> thanks,
> Martie
> 
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