ROC, PR, and Region of Utility

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Editable variables

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estimated prevalence (Prev):

minimal acceptable sensitivity: impose limit

minimal acceptable PPV: impose limit

minimal acceptable NPV: impose limit

ROC curve - threshold, Sens, Spec:
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Derived variables

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estimated pretest Odds Ratio (OR_pre): = Prev/(1-Prev)

minimal acceptable Likelihood Ratio (+): = PPV/(1-PPV)/OR_pre

maximal acceptable Likelihood Ratio (-): = (1-NPV)/NPV/OR_pre

minimal acceptable posttest Odds Ratio (+): = PPV/(1-PPV)

maximal acceptable posttest Odds Ratio (-): = (1-NPV)/NPV

Legend

ROC, receiver-operative characteristic; PRC, precision-recall curve; TP, true positive; FP, false positive; FN, false negative; TN, true negative; Sens, sensitivity; Spec, specificity; Prev, prevalence; PPV, positive predictive value; NPV, negative predictive value; OR, odds ratio; LR+, likelihood ratio positive; LR-, likelihood ratio negative

Statistic Region of Utility visualized

Editable variables

Derived variables

Legend