[R] (no subject)

[Göran Broström]

On Thu, Jan 20, 2005 at 03:18:53PM +0100, 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) ?

One way of avoiding this problem is to fit the Weibull model with 'weibreg'
in the package eha.


-- 
 Göran Broström                    tel: +46 90 786 5223
 Department of Statistics          fax: +46 90 786 6614
 Umeå University                   http://www.stat.umu.se/egna/gb/
 SE-90187 Umeå, Sweden             e-mail: gb at stat.umu.se