This is a slightly modified version of Therneau's survfit.coxph
function. The difference is that survfit.cph
assumes that
x=TRUE,y=TRUE
were specified to the fit. This assures that the
environment in effect at the time of the fit (e.g., automatic knot
estimation for spline functions) is the same one used for basing predictions.
# S3 method for cph
survfit(formula, newdata, se.fit=TRUE, conf.int=0.95,
individual=FALSE, type=NULL, vartype=NULL,
conf.type=c('log', "log-log", "plain", "none"), id, ...)
see survfit.coxph
a fit object from cph
or coxph
see survfit.coxph
see
survfit
. If individual
is TRUE
,
there must be exactly one Surv
object in newdata
. This
object is used to specify time intervals for time-dependent covariate
paths. To get predictions for multiple subjects with time-dependent
covariates, specify a vector id
which specifies unique
hypothetical subjects. The length of id
should equal the
number of rows in newdata
.
Not used
survest.cph