search for: anomaly1

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2010 Dec 07
0
coxph failure
...ph. I'll have to think about what to do since on the one hand it's your own fault for trying to fit a very bad model, and on the other I'd like the routine to give a nice error message before it dies. In the data set you sent me the predictor variable is very skewed: > quantile(anomaly1$CREAT, c(0, .5, .9, .999, 1)) 0% 50% 90% 99.9% 100% 0.5000 1.4000 2.2000 4.6027 7.3000 There are 1000 observations, the largest is 7.3 and the second largest is 4.6. The subject with a 7.3 was a failure. When you fit a 4 degree of freedom polynomial to this there is enough "s...