Hi,
I'm using stepAIC with a CoxPH model on some data. As
we expect, there are a bunch of predictors, and stepAIC
throws some out and then converges on others.
Anyway, when I run cox.zph on the final model, I get
some evidence of Beta(t) time dependence. Should I
be concerned about the impact of
Hi,
I've been banging my head against the following problem for a while
and thought the fine people on r-help might be able to help. I'm
using the survival package.
I'm studying the survival rate of a population with a preexisting
linear-like event rate (there are theoretical reasons to believe
i
Hi,
I'm doing some coxph fits using the survival package. There are a large
number of potential predictors and so I was considering using stepAIC
for model selection. However, in the early stages I'm getting complaints
like the following:
Warning message:
In fitter(X, Y, strats, offset, init, co
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