Fig. 2From: A novel method for interrogating receiver operating characteristic curves for assessing prognostic testsSensitivity and PPV at a given specificity. a Sensitivity at a given specificity (S p = 0.90) for three ROC curves with the same AUROC (full ROC curves shown in Fig. 1). b PPV as a function of disease prevalence (p = 0.05, 0.10, 0.20) for given specificity (S p = 0.90) and sensitivity (S n = 0.58)Back to article page