[R] coxph

[David Winsemius]

On Aug 9, 2010, at 8:17 PM, Hongying Li wrote:

>
> Hello,
> when using coxph function from survival package, what do you do if  
> you encounter such problem like:
>
> Warning message:
> In fitter(X, Y, strats, offset, init, control, weights = weights,  :
>  Loglik converged before variable  3,4 ; beta may be infinite.

It generally does not signal a problem. You can, of course, check to  
see if any betas are unexpectedly large. I have never found that  
unusually large estimates after such a warning.

-- 
David Winsemius, MD
West Hartford, CT