On Dec 10, 2009, at 12:11 PM, Ashta wrote:
Hi all,
I was trying to test the assumption of proportional hazards
assumption, I used the cox.zph function
cox.zph(coxfit6)
Results are:
rhochisqp
x1 -0.03961.397 2.37e-01
x2 0.11079.715 1.83e-03
x3 -0.08857.7435.39e-03
x4 0.03661.0922.96e-01
x5 0.0242 0.4555.00e-01
GLOBAL NA 30.9529.57e-06
Are all these covariates fulfilled the assumption of proportional
hazards?
Your two basic questions today suggest that you are either attempting
to teach yourself survival analysis, or you are in a class with the
same goal. You should consult your textbook, or if you don' t have a
textbook, you should get one, or perhaps even a G-search with terms:
proportionality "cox.zph".
--
David.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
