Hi,

I'm having problems with the Zelig package - when using the below R displays the follwing message (I'm running R i386 2.15.3 for Windows and have updated all the Zelig packages):

z.out<-zelig(Surv(psurv2, pcens2) ~ ren_sup3 + age,
                data=data_urgent, model="coxph")

** The model "coxph" is not available with the currently loaded packages,
** and is not an official Zelig package.
** The model's name may be a typo.

Any suggestions?

Regards,
Steve Knight

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