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survival curves from a time dependent cox model

To: s-news@lists.biostat.wustl.edu
Subject: survival curves from a time dependent cox model
From: phguardiol@aol.com
Date: Sun, 10 Aug 2008 09:51:13 -0400
Dear S users

I m using Splus2000Pro under XPPro
I d like to plot survival curves adjusted from a Cox model in which a time dependent covariate
(treatment)is included with other covariates.
I d like to plot adujsted survival curves from treatment effect according to other categorical covariates such as sex etc...
the "...+ cluster(id).." that is used to cluster all rows from a same patient seems to be a problem when using predict and survfit... How can I manage this ?

Thanks

Philippe Guardiola
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