auc.hqm {HQM}R Documentation

AUC for the High Quality Marker estimator

Description

Calculates the AUC for the HQM estimator.

Usage

auc.hqm(xin, est, landm, th, event_time_name, status_name)

Arguments

xin

A data frame containing event times and the patient status.

est

The HQM estimator values, typically the output of get_h_x.

landm

Landmark time.

th

Time horizon.

event_time_name

The column name of the event times in the xin data frame.

status_name

The column name of the status variable in the xin frame.

Details

The function auc.hqm implements the AUC calculation for the HQM estimator estimator.

Value

A vector of two values: the landmark time of the calculation and the AUC value.

See Also

bs.hqm

Examples

library(timeROC)
library(survival)
 Landmark <- 2
 pbcT1 <- pbc2[which(pbc2$year< Landmark  & pbc2$years> Landmark),]
 timesS2 <- seq(Landmark,14,by=0.5)
 b=0.9
 arg1<- get_h_x(pbcT1, 'albumin', event_time_name = 'years',  
                time_name = 'year', event_name = 'status2', 2, 0.9) 
 br_s2  = seq(Landmark, 14,  length=99)
 sfalb2<- make_sf(    (br_s2[2]-br_s2[1])/4 , arg1)
 tHor <- 1.5
 auc.hq.use<-auc.hqm(pbcT1, sfalb2, Landmark,tHor,  
              event_time_name = 'years', status_name = 'status2')
 auc.hq.use

[Package HQM version 0.1.2 Index]