On 12/13/2013 05:00 AM, r-help-request at r-project.org
wrote:> i all,
>
>
>
> I am using the coxme function to fit random effects survival models. The
> base survival models show a typical "J" shaped curve where
survival drops
> sharply then plateaus over time interval. I want to include a time
> covariate which could account for this non-linear decrease in survival over
> time. However, I have not found a clear way to do this in the coxme
> models. Any suggestions would be greatly appreciated. Below is some
> sample code and data.
>
>
>
> -Jared
>
I don't understand what you need. One of the advantages of the Cox model is
that the
baseline hazard function automatically accommodates such features, for both
coxph and coxme.
Terry Therneau
PS: I can't make out the pattern of your sample data. Perhaps you were
depending on the
html formatting? R-help uses simple text only.