Survival Analysis Table

Hi,

I am trying to compute a table of a Kaplan Meier survival function.

I have created the Kaplan Meier using:

field.KM <-  
survfit(Surv(project_no_1983$entryage3,project_no_1983$age_at_death,proj 
ect_no_1983$death)~1)

and I want to find the survival rate and confidence intervals at  
different times (eg, 1 year, 2 years, 5 years, etc).

Can anybody tell me how to do this?


Thanks,
Neil