I have run a Kaplan Meier estimator with the survival package and it gives a median.
survfit(Surv(time, status) ~ 1, data = df) Call: survfit(formula = Surv(time, status) ~ 1, data = data) n events median 0.95LCL 0.95UCL 125 33 76 51 88
Is this median the median survival rate? And if so what does it tell me? Does it give the median time individuals survive? Or is it the time when the survival probability for individuals is at 0.5? Could somebody please clarify?