Message-ID: <1630337503@web.de>
Date: 2005-10-19T14:42:37Z
From: Christoph Leuchtner
Subject: schoenfeld residuals in the cox.zph function
To R-project help
I work with a clinical dataset including about 27,000 patients and I wanted to do some model diagnostics on cox regression models with frailty effects (for every patient). But in this case the cox.zph function did not work. I always got the following error message:
Fehler in residuals.coxph(fit, "schoenfeld") :
NA/NaN/Inf in externem Funktionsaufruf (arg 5)
Does anyone know what's wrong? I did the same without using frailty effects and everything was o.k. What could I do?