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ROC curves of the three metrics of MemTrax. (A) ROC curve of end MTx-%C with cutoff point at 78. (B) ROC curve of end MTx-RT with cutoff point at 1.402. (C) ROC curve of end MTx-Cp with cutoff point at 46.3. MTx-%C, MemTrax percent correct; MTx-RT, MemTrax response time (seconds); MTx-Cp, MemTrax composite score, was derived by multiplying the numbers in MTx-%C and the reciprocal of MTx-RT (= MTx-%C/MTx-RT); ROC, receiver operating characteristic; AUC, area under the curve.
