Re: [R] Weibull survival regression model with different shape parameters

2009-10-03 Thread Terry Therneau
--- begin included message --- I'm trying to fit a parametric survival model using the survreg function with a Weibull distribution. I'm studying the time to death of individuals from different families and I would like to fit different shape parameters (ie 1/scale in R) for each of the familie

[R] Weibull survival regression model with different shape parameters

2009-10-02 Thread Nicolas RODE
Dear R users, I'm trying to fit a parametric survival model using the survreg function with a Weibull distribution. I'm studying the time to death of individuals from different families and I would like to fit different shape parameters (ie 1/scale in R) for each of the families. I looked it up in