Compute the predicted survival curve for a Cox model.
a coxph fit
if TRUE return data from a predicted survival curve at
the mean values of the covariates
This function is simply an alias for
survfit, which does the
actual work and has a richer set of options.
The alias exists only because some users look for predicted survival
estimates under this name.
The function returns a data frame containing the
cumhaz and optionally the strata (if the fitted Cox model used
a strata statement), which are copied the
If there are factor variables in the model, then the default
predictions at the "mean" are meaningless since they do not correspond
to any possible subject; correct results require use of the
newdata argument of survfit. Results for all covariates =0 are
normally only of use as a building block for further calculations.
a data frame with variable names of
strata. The first is actually the cumulative hazard.
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