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st: COX


From   Marc Busson <marc.busson@univ-paris-diderot.fr>
To   SPSS-L@listserv.uga.edu, statalist@hsphsun2.harvard.edu
Subject   st: COX
Date   Fri, 28 Mar 2008 15:24:30 +0100

Hi all,

Do you known if it is possible to calculate a COX regression for censured data when the number of case is equal to 0 in a categorie of a covariate of the model.
for example:
first covariate: sex : 112 males, 85 females
second covariate: genotype : AA = 50, AB= 147, BB = 0
This give a mistake due to non convergence.
Is there a possibility to solve this problem
Thanks

--
BUSSON Marc, PhD


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