ppv {alternativeROC} | R Documentation |
Diagnostic performance: Positive predictive values from a ROC curve
Description
Diagnostic performance: Positive predictive values (PPV) from a ROC curve
Usage
ppv(roc, prevalence)
Arguments
roc |
Object of class pROC. |
prevalence |
Prevalence of the endpoint in the study population. |
Value
A matrix with the following columns:
threshold
: The thresholds used to compute the sensitivity and specificity.sensitivity
: The sensitivities at the threshold.specificity
: The specificities at the threshold.ppv
: The positive predictive values at the threshold.prevalence
: The prevalence of the endpoint in the study population, as provided in the input.
[Package alternativeROC version 1.0.0 Index]