basehaz
Alias for the survfit function
Description
Compute the predicted survival curve for a Cox model.
Usage
basehaz(fit, centered=TRUE)
Arguments
fit | a coxph fit |
centered | if TRUE return data from a predicted survival curve at the mean values of the covariates |
Details
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 time
, cumhaz
and optionally the strata (if the fitted Cox model used a strata statement), which are copied the survfit
result. 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.
Value
a data frame with variable names of hazard
, time
and optionally strata
. The first is actually the cumulative hazard.
See Also
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.