dynpred (version 0.1.2)

AUCw: Calculate dynamic AUC(t) curve

Description

Calculate dynamic model-free curve of Area Under the Curve values over time, based on the dynamic/incident AUC of Heagerty and Zheng.

Usage

AUCw(formula, data, width)

Arguments

formula

Formula for prediction model to be used as in coxph

data

Data set in which to interpret the formula

width

Width of the window

Value

A data frame with columns

time

The time points t at which AUCw(t) changes value (either t or t+width is an event time point)

AUCw

The AUCw(t) function

and with attribute "width" given as input.

References

van Houwelingen HC, Putter H (2012). Dynamic Prediction in Clinical Survival Analysis. Chapman & Hall.

Examples

data(ova)
AUCw(Surv(tyears, d) ~ Karn + Broders + FIGO + Ascites + Diam, data = ova,
  width = 2)