[R] meaning of frailty estimates

Thomas Lumley tlumley at u.washington.edu
Thu Oct 28 16:08:54 CEST 2004

On Thu, 28 Oct 2004, Emanuela Rossi wrote:

> Hello,
> I'm trying to estimate a Cox's survival model with a random effect, so I 
> have added the instruction frailty.gaussian (name variable) in the 
> model.
> My frailty variable is a qualitative variable with four types of answer.
> In the resulting output there are the parameter estimates of all the 
> variables, but there are also four estimates for each type of answer of 
> the frailty variable. Which kind of estimates are they? Maybe hazard 
> ratio? But which is the reference?

Perhaps you could post this output so we know what you are talking about.


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