Dear Stata Users,
I am fitting a Cox regression model and want to check ph assumption using a lowees smooth of the scaled Schoenfeld residual (estat phtest).
I ask you if there is a way to plot also a pointwise confidence interval for the smoothed valued of the Shoenfeld residuals. It could be useful to assess if the ph assumption hold checking if the confidence intervals contain a constant hazard ratio.
Thanks
Enzo
Enzo Coviello
Dipartimento Prevenzione ASL BAT/1
via Fornaci 201 - 70031 ANDRIA (Italy)
-----Messaggio originale-----
Da: [email protected] per conto di Maarten Buis
Inviato: ven 13/10/2006 10.08
A: [email protected]
Oggetto: st: RE: Cox regression: saving estimates
Michael:
Roger Newson had a paper in the Stata Journal discussing exactly how to do these kind of things:
Newson R. Confidence intervals and p-values for delivery to the end user. The Stata Journal 2003; 3(3): 245-269
He has a pre-publication draft of this paper on his website: http://www.imperial.ac.uk/nhli/r.newson/
HTH,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
--- Michael McCulloch wrote:
> I am comparing many different models of a Cox regression in a graph.
<snip>
> I would like to save the effect size and their lower and upper confidence
> limits in a separate dataset, along with a label for the method, so that I
> can display them in a graph, so I don't need to enter them manually.
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
<<winmail.dat>>
