[R] Coxph function

From: <Sharon.Mazurel_at_ing.com>
Date: Tue 11 Jul 2006 - 19:44:47 EST


Dear Sir/Madam,

My name is Sharon Mazurel and I'm busy with my final thesis about estimating the probability of the success or withdrawal of a merger or acquisition.

For my model I also use duration analysis and found after doing some research that the coxph function in R is very useful.

My question is:

In the Surv object you have two arguments, "time" and "event". I have two events, namely withdrawn and success.

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


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

Best regards,

Sharon Mazurel

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