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Re: st: R: Kaplan meier graphs


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: R: Kaplan meier graphs
Date   Thu, 5 Feb 2009 12:55:24 +0000 (GMT)

--- On Thu, 5/2/09, sarah keys wrote:
> I don't suppose you (or anyone else) know about
> adjusting KM?

You can display the survival curve at specific values of 
your explanatory variables after -stcox- (or -streg-) 
using -stcurve-. By default the explanatory variables
are set at their mean value, which may not be sensible
for a categorical variable. In that case use the -at()-
option.

*------------ begin example -----------------
sysuse cancer, clear
stset studytime, failure(died)
xi: stcox i.drug age, basesurv(s)
stcurve, survival at(_Idrug_2=0 _Idrug_3=0)
*------------- end example ------------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      

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