I am trying to fit a Weibull PH model with a gaussian frailty term (kidney data). Is the following approach correct?
Kidn1<-survreg(formula = Surv(rtime, event)~ age+sex+gn+an+pkn+frailty.gaussian(patient), data=kidney, dist='weibull')
2. Based on Venables and Ripley (350-353), divide the negative of the coefficients by the scale parameter to obtain the Weibull PH model coefficients.
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