--- Sharon Johnatty <[email protected]> wrote:
> xi: stcox works, but only if variable is coded 1, 2 or 3. It doesn't
> work if the variable is coded 0, 1, 2.
That is very very strange. -xi- just looks at distinct values, not
their actual contents, so it should work with any coding. In the
example below I have changed the coding of drug to 0, 1, 2, and it
works. So, could you tell us a bit more about what is not working, so
we can solve the problem.
*------------------ begin example ---------------
sysuse cancer, clear
stset studytim, failure(died)
/*Change the coding to 0, 1, 2*/
replace drug = drug -1
xi: stcox i.drug age
*------------------ 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 Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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