survfit.smoothSurvReg: Survivor Curves for Objects of Class 'smoothSurvReg'

In smoothSurv: Survival Regression with Smoothed Error Distribution

Survivor Curves for Objects of Class 'smoothSurvReg'

Description

Compute and plot survivor function/cumulative distribution function for given combinations of covariates based on the fitted model.

Usage

## S3 method for class 'smoothSurvReg'
survfit(formula, cov, logscale.cov, time0 = 0, plot = TRUE, cdf = FALSE,
   by, xlim, ylim = c(0, 1), xlab = "t", ylab, 
   type = "l", lty, main, sub, legend, bty = "n", cex.legend = 1, ...)

Arguments

formula	Object of class smoothSurvReg.
cov	Vector or matrix with covariates values for which the survivor curve/cdf is to be computed and plotted. It must be a matrix with as many columns as is the number of covariates (interactions included) or the vector of length equal to the number of covariates (interactions included). Intercept is not to be included in cov. If cov is missing a survivor curve for the value of a covariate vector equal to zero is plotted. If there is only intercept in the model the survivor curve based on the fitted error distribution is always plotted.
logscale.cov	Vector or matrix with covariate values for the expression of log-scale (if this depended on covariates). It can be omitted in the case that log-scale was common for all observations.
time0	Starting time of the follow-up as used in the model. I.e. the model is assumed to be log(T-time0) = x'beta + sigma*epsilon
plot	If TRUE the plot is directly produced, otherwise only a data.frame with information used for later plotting is returned.
cdf	If TRUE cumulative distribution function is plotted instead of the survivor function.
by	Step for a ploting grid. If NULL it is automatically computed.
xlim, ylim	Arguments passed to the plot function.
xlab, ylab	Arguments passed to the plot function.
type, lty	Arguments passed to the plot function.
main, sub	Arguments passed to the plot function.
legend, bty	Argument passed to the plot function.
cex.legend	argument passed to cex argument of the legend function.
...	Arguments passed to the plot function.

Value

A dataframe with columns named x and y where x gives the grid and y the values of the survivor/cum. distribution function at that grid.

Author(s)

Arnošt Komárek [e-mail]

See Also

smoothSurvReg, plot

smoothSurv documentation built on Oct. 11, 2022, 1:05 a.m.