On Mar 16, 2012, at 1:09 PM, niloo javan wrote:
hi
i want to analyze Right Censore-Length bias data under cox model
with covariate.
what is the package ?
I initially left this question alone because I thought there might be
viewers for whom it all made perfect sense. After two days that
probability seems to be declining. The problem I had was the meaning
of "length bias data". Are you talking about a non-proportional effect
in which the assumption of a constant hazard ratio over time is false
and other methods are needed. If that is correct, then you should get
a copy of Therneau and Grambsch's "Modeling Survival Data" and study
the chapter on "Functional Form'. The package would be "survival".
--
David Winsemius, MD
West Hartford, CT
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