[R] how to obtain CI of the random effects variance in a frailty model?

From: SUBIRANA CACHINERO, ISAAC <isubirana_at_imim.es>
Date: Sat 16 Apr 2005 - 04:15:27 EST


Does anyone know how to obtain a confidence interval for the random effects variance in a frailty Proporcional Hazard Cox (PHC) model?.  

The sintaxis in R is of the form:  


from the 'survival' library.  

If I'm not wrong, the instruction  


returns the estimation of the random effects (hospital) variance, but not the deviation of this estimation.  

Or, if there's another function instead, perhaps from another library, of 'coxph' that could estimate a frailty PHC model and the standard deviation of the random effects variance.    

Thanks in advance.

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Apr 16 04:19:00 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:31:12 EST