Dear Terry,
I agree that this example is highly atypical. Having said that, my experience
with optimization algorithms is that scaling (a.k.a. standardizing) the
continuous covariates is greatly helpful in terms of convergence. Have you
considered automatically standardizing the continuous co
On 09/03/2012 05:00 AM, r-help-requ...@r-project.org wrote:
The coxph function in R is not working for me when I use a continuous predictor
in the model. Specifically, it
> fails to converge, even when bumping up the number of max iterations
or setting reasonable initial values.
> The estimat
The coxph function in R is not working for me when I use a continuous predictor
in the model. Specifically, it fails to converge, even when bumping up the
number of max iterations or setting reasonable initial values. The estimated
Hazard ratio from the model is incorrect (verified by an AFT mod
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