time
| the time points at which the curve has a step. |
n.risk
| the number of subjects at risk at t. |
n.event
| the number of events that occur at time t. |
surv
| the estimate of survival at time t+0. This may be a vector or a matrix. |
strata
|
if there are multiple curves, this component gives the number of elements of
of the time etc. vectors corresponding to the first curve, the second curve,
and so on. The names of the elements are labels for the curves.
|
std.err
| the standard error of the cumulative hazard or -log(survival). |
uppper
| upper confidence limit for the survival curve. |
lower
| lower confidence limit for the survival curve. |
conf.type
| the approximation used to compute the confidence limits. |
conf.int
| the level of the confident limits, e.g. 90 or 95%. |
na.action
| the returned value from the na.action function, if any. It will be used in the printout of the curve, e.g., the number of observations deleted due to missing values. |
call
| an image of the call that produced the object. |
Objects of this class have methods for the functions `print', `summary', `plot', `points' and `lines'.
survfit
object.survfit
, plot.survfit
, summary.survfit
.