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bcat
2011 Sep 02
1
Parameters in Gamma Frailty model
...to frailty model. I have a question on the output from 'survival'
pack. Below is the output. What does gamma1,2,3 refer to? How do I
calculate joint hazard function or marginal hazard function using info
below? Many thanks!
Call:
coxph(formula = surv ~ as.factor(tibia) + frailty(as.factor(bdcat)),
data = try)
n=877 (1 observation deleted due to missingness)
coef se(coef) se2 Chisq DF p
as.factor(tibia)2 0.214 0.126 0.125 2.89 1.00 0.0890
frailty(as.factor(bdcat)) 10.24 1.65 0.0038
exp(coef) exp...