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fit2
2003 Aug 04
1
coxph and frailty
...t
what is fitf$fvar?
Moreover, if I estimate the same model as the one above, but with a
`group' variable with only 4 groups (instead of 7 as in the example
above), the coxph object does not contain those two elements.
Instead, it reports a $coef object that includes the frailty terms:
> fitf2$coef
age log(bili) log(protime) log(albumin) edema gamma:1
0.05413962 1.11244236 2.64338176 -3.89824452 0.71347526 0.15547991
gamma:2 gamma:3 gamma:4
0.25794637 -0.47470789 -0.08834457
And a $means objects with 9 elements:
> fitf2$means
[1]...