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Receiver operating characteristic (ROC) curves of the discriminatory power between subjective cognitive decline (SCD) plus and elderly controls (ECs)/amnestic mild cognitive impairment (aMCI) individuals. The combined area under the ROC curve (AUC) in discriminating SCD plus from ECs obtained with MK (A) and CBF values (B). Combined AUC in discriminating participants with SCD plus from participants with aMCI obtained with MK values (C) and CBF values (D).
