Virginie Rondeau wrote:
Hello
I would like to compare the results obtained with a classical non parametric proportionnal hazard model with a parametric proportionnal hazard model using a Weibull.


How can we obtain the equivalence of the parameters using coxph(non parametric model) and survreg(parametric model) ?

Thanks
Virginie

In the Design package look at the pphsm function that converts a survreg Weibull fit (fitted by the psm function which is an adaptation of survreg) to PH form.


--
Frank E Harrell Jr   Professor and Chair           School of Medicine
                     Department of Biostatistics   Vanderbilt University

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