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to_stroke
2011 Apr 05
0
frailty
Hi R-users
I spend a lot of time searching on the web but I didn?t found a clear
answer.
I have some doubts with 'frailty' function of 'survival' package.
The following model with the function R ?coxph? was fitted:
modx <- coxph(Surv(to_stroke, stroke) ~ age + sbp + dbp + sex +
frailty(center,distribution = "gamma", method='aic'), data=datax)
Then I get survival (eg to 10 years) for the mean of the covariates:
survfit1 <- survfit(modx)
timesele<- 3652.25
tab <- as.data.frame(cbind(survfit1$time, survfit1$sur...