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Table 3 Results from receiver operating characteristic (ROC) analysis to distinguish MCI-AD from MCI-LB

From: Quantitative EEG as a biomarker in mild cognitive impairment with Lewy bodies

EEG measure AUC [95% CI] Cutoff for MCI-LB Sensitivity Specificity
Delta power 0.54 [0.41, 0.67] > 21.9 0.23 0.89
Theta power 0.60 [0.47, 0.73] > 10.7 0.33 0.89
Pre-alpha power 0.68 [0.56, 0.81] > 28.1 0.56 0.83
Alpha power 0.66 [0.53, 0.78] < 20.5 0.41 0.97
Beta power 0.71 [0.59, 0.83] < 19.0 0.61 0.81
Theta/alpha ratio 0.64 [0.51, 0.77] > 0.56 0.49 0.83
DF, all electrodes 0.70 [0.58, 0.82] < 7.1 0.51 0.86
DF, occipital electrodes 0.69 [0.57, 0.81] < 7.1 0.51 0.86
  1. The sensitivity/specificity cutoff was determined using Youden’s index
  2. AUC area under the receiver operating curve, CI confidence interval, DF dominant frequency, MCI-AD mild cognitive impairment with Alzheimer’s disease, MCI-LB probable mild cognitive impairment with Lewy bodies