APtools: Average Positive Predictive Values (AP) for Binary Outcomes and Censored Event Times

We provide tools to estimate two prediction performance metrics, the average positive predictive values (AP) as well as the well-known AUC (the area under the receiver operator characteristic curve) for risk scores or marker. The outcome of interest is either binary or censored event time. Note that for censored event time, our functions estimate the AP and the AUC are time-dependent for pre-specified time interval(s). A function that compares the APs of two risk scores/markers is also included. Optional outputs include positive predictive values and true positive fractions at the specified marker cut-off values, and a plot of the time-dependent AP versus time (available for event time data).

Author
Hengrui Cai <hengruicai@gmail.com>, Yan Yuan <yyuan@ualberta.ca>, Qian Michelle Zhou <qz70@msstate.edu>, Bingying Li<dorisli1120@gmail.com>
Date of publication
2016-08-05 22:49:06
Maintainer
Hengrui Cai <hengruicai@gmail.com>
License
LGPL-3
Version
3.0

View on CRAN

Man pages

APBinary
Estimating the AP and the AUC for Binary Outcome Data.
APSurv
Estimating the Time-dependent AP and AUC for Censored Time to...
APtools
Functions to estimate Average Positive Predictive Values (AP)...
CompareAP
Comparison of two risk scores based on the differences and...
mayo
Mayo Marker data

Files in this package

APtools
APtools/NAMESPACE
APtools/data
APtools/data/mayo.RData
APtools/R
APtools/R/sum.I.R
APtools/R/APBinary.R
APtools/R/APtools.R
APtools/R/APSurv.R
APtools/R/CompareAP.R
APtools/MD5
APtools/DESCRIPTION
APtools/man
APtools/man/CompareAP.Rd
APtools/man/APtools.Rd
APtools/man/APSurv.Rd
APtools/man/APBinary.Rd
APtools/man/mayo.Rd