[R] predict risk (% of death) at a certain time point

2011-12-19 Thread Bill Hyman
Dear all, Does any one know how to calculate the risk (death rate) at some time point (say 5 yrs) based on Kaplan-Meier curve in coxph model in R? I know how to fit the survival data with coxph. But need to calculate risk at some time point. Many thanks. Bill

Re: [R] predict risk (% of death) at a certain time point

2011-12-19 Thread David Winsemius
On Dec 19, 2011, at 10:05 PM, Bill Hyman wrote: Dear all, Does any one know how to calculate the risk (death rate) at some time point (say 5 yrs) based on Kaplan-Meier curve in coxph model in R? I know how to fit the survival data with coxph. But need to calculate risk at some time