Fig. 2From: Performance of the QPLEX™ Alz plus assay, a novel multiplex kit for screening cerebral amyloid depositionReceiver operating characteristic (ROC) curve analysis for PiB positivity. a ROC curve analyses for PiB positivity. Age and sex were used as covariates. b Interactive dot diagram and plot versus criterion values showing sensitivity, specificity, and Youden index cutoff criteria. c, d Comparison of ROC curve analyses. Age sex were used as covariates. Model III had the highest area under curve (AUC) value (0.891). PV, predictive values; SE, standard error; CI, confidence intervalBack to article page