[R] The survival rate at a certain time

[Lisa Wang]

Hello there,

I am doing analysis on survival data. How do I pick out a probability of
survival at a chosen landmark time(for example, 3 years, 4 years) from
the result of "survfit"? or any other functions? As I know, the result
of 'survfit' only have the probabilities for all event or cencor time.

Thank you very much

Lisa Wang

Princess Margaret Hospital
Toronto, Ca

tel: 416-946-4501 ext.5201