riskRegression (version 2022.03.22)

plotAUC: Plot of time-dependent AUC curves

Description

Plot of time-dependent AUC curves

Usage

plotAUC(
  x,
  models,
  which = "score",
  xlim,
  ylim,
  xlab,
  ylab,
  col,
  lwd,
  lty = 1,
  cex = 1,
  pch = 1,
  type = "l",
  axes = 1L,
  percent = 1L,
  conf.int = 0L,
  legend = 1L,
  ...
)

Arguments

x

Object obtained with Score.list

models

Choice of models to plot

which

Character. Either "score" to show AUC or "contrasts" to show differences between AUC.

xlim

Limits for x-axis

ylim

Limits for y-axis

xlab

Label for x-axis

ylab

Label for y-axis

col

line color

lwd

line width

lty

line style

cex

point size

pch

point style

type

line type

axes

Logical. If TRUE draw axes.

percent

Logical. If TRUE scale y-axis in percent.

conf.int

Logical. If TRUE draw confidence shadows.

legend

Logical. If TRUE draw legend.

...

Used for additional control of the subroutines: plot,

Examples

library(survival)
library(prodlim)
set.seed(10)
d=sampleData(100,outcome="survival")
nd=sampleData(100,outcome="survival")
f1=coxph(Surv(time,event)~X1+X6+X8,data=d,x=TRUE,y=TRUE)
f2=coxph(Surv(time,event)~X2+X5+X9,data=d,x=TRUE,y=TRUE)
xx=Score(list("X1+X6+X8"=f1,"X2+X5+X9"=f2), formula=Surv(time,event)~1,
data=nd, metrics="auc", null.model=FALSE, times=seq(3:10))
aucgraph <- plotAUC(xx)
plotAUC(xx,conf.int=TRUE)
## difference between 
plotAUC(xx,which="contrasts",conf.int=TRUE)