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RE: st: clogit data format


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: clogit data format
Date   Thu, 20 Mar 2008 15:33:25 -0000

Be that as it may, the report of "very different answers" is pretty
difficult
to discuss without any details whatsoever.

Nick
n.j.cox@durham.ac.uk 

Margaret R Grove

I've seen examples of SAS PHREG and Stata clogit used on the same data 
at the following web site:

http://www.indiana.edu/~statmath/stat/all/cdvm/cdvm7.html

Svend Juul wrote:

> Margaret wrote:
>  
> I'm attempting to use clogit and have a very basic 
> question about the data format. It seems like it 
> should be obvious but I'm getting very different 
> answers than a colleague using SAS PHREG.
> ...
>  
> ====================================================
>  
> Isn't SAS PHREG about proportional hazards regression
> (Cox regression)? Stata's -clogit- performs conditional
> logistic regression; in my understanding this is quite
> a different analysis.

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