[R] Coxph

Sharon.Mazurel at ing.com
Tue, 11 Jul 2006 10:22:42 -0000

Dear all,



My question is:

In the Surv object you have two arguments, "time" and
"event". I have
two events, namely withdrawn and success.
I use no event or status argument in "Surv" because all my objects
"die"
in my data set.

Does coxph function calculate the coefficients correctly when you put no
"event" argument into the Surv object?

Thus:

Coxph(Surv(duration)~covariates,data=data) duration=duration of the deal

Duration: is the time till one subject fails or succeed in my research.

Can somebody help me?


Best regards,


Sharon Mazurel


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