Re: st: clogit data format

[Margaret R Grove <margaret.r.grove@Dartmouth.EDU>]

Apologies!  I should have stated my question more clearly:

Is the format I showed in my post appropriate for what I'm trying to do?

Thank you!
Margaret

The data looks like this:

id    rater    rating
1      1          0
1      2          1
1      3          1
1      4          0
2      1          1
2      2          .
2      3          0
2      4          0
etc.

I want to look at the difference between raters (have already done 
kappa).  I tried:

xi: clogit rating i.rater, group(id)

Nick Cox wrote:

> 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.
> >     
> *
> *   For searches and help try:
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> *   http://www.ats.ucla.edu/stat/stata/
>   
--
__________________________
Margaret R. Grove, MS
Research Associate/Analyst, TDI
1 Medical Center Drive, Room 570
Lebanon, NH 03756
Tel: 603-653-3560
Fax: 603-653-3558

*
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