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coxph
2 messages · Hongying Li, 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