Message-ID: <1350161728246-4646096.post@n4.nabble.com>
Date: 2012-10-13T20:55:28Z
From: rm
Subject: Problems with coxph and survfit in a stratified model with interactions
I?m trying to set up proportional hazard model that is stratified with
respect to covariate 1 and has an interaction between covariate 1 and
another variable, covariate 2. Both variables are categorical. In the
following, I try to illustrate the two problems that I?ve encountered, using
the lung dataset.
The first problem is the warning:
To me, it seems that there are too many dummies generated.
The second problem is the error:
--
View this message in context: http://r.789695.n4.nabble.com/Problems-with-coxph-and-survfit-in-a-stratified-model-with-interactions-tp4646096.html
Sent from the R help mailing list archive at Nabble.com.