Computes the influence functions (IID decomposition) for the regression coefficients and/or the baseline cumulative hazard at a specific time point.
Usage
# S3 method for class 'phreg'
IC(x, type = "robust", all = FALSE, time = NULL, baseline = NULL, ...)Arguments
- x
Object of class
"phreg".- type
Type of influence function:
"robust"(default) or"martingale".- all
Logical; if
TRUE, returns both beta and baseline influence functions.- time
Time point for baseline influence function (required if baseline is requested).
- baseline
Arguments for baseline estimation.
- ...
Additional arguments.
Value
A matrix of influence functions. If all=TRUE, columns correspond to
regression coefficients and baseline cumulative hazard. Attributes include coef
and time.