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medata
2005 Feb 04
2
no. at risk in survfit()
Hi,
when I generated a survfit() object, I can get number
of patients at risk at various time points by using
summary():
fit<-survfit(Surv(time,status)~class,data=mtdata)
summary(fit)
class=1
time n.risk n.event survival std.err lower 95% CI
upper 95% CI
9.9 78 1 0.987 0.0127 0.963 1
41.5 77 1 0.974 0.0179 0.940 1
54.0 76 1 0.962 0.0218 0.920 1
99.1 38 1 0.936 0.0328...