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Table 4 Area under ROC curve and prediction probability (Pk) estimates for determining consciousness versus unconsciousness.

From: Peak and averaged bicoherence for different EEG patterns during general anaesthesia

Bifrequency region Including eye blinks and burst suppression Excluding eye blinks and burst suppression
  Area under ROC P k Area under ROC P k
Averages     
δ_δ 0.799 (0.765-0.833) 0.800 (0.766-0.834) 0.859 (0.836-0.882) 0.860 (0.838-0.883)
δ_θ 0.806 (0.767-0.844) 0.804 (0.765-0.842) 0.873 (0.849-0.896) 0.871 (0.848-0.894)
δ_α 0.679 (0.637-0.721) 0.679 (0.637-0.721) 0.726 (0.690-0.762) 0.726 (0.690-0.762)
δ_β 0.687 (0.646-0.728) 0.639 (0.601-0.678) 0.711 (0.672-0.751) 0.659 (0.621-0.697)
θ_θ 0.660 (0.619-0.701) 0.659 (0.618-0.700) 0.709 (0.674-0.745) 0.708 (0.673-0.744)
θ_α 0.634 (0.592-0.676) 0.630 (0.589-0.672) 0.668 (0.630-0.707) 0.664 (0.626-0.703)
θ_β 0.547 (0.504-0.589) 0.540 (0.502-0.579) 0.541 (0.499-0.584) 0.539 (0.500-0.577)
α_α 0.649 (0.610-0.688) 0.646 (0.607-0.684) 0.660 (0.620-0.700) 0.657 (0.617-0.696)
α_β 0.574 (0.535-0.613) 0.578 (0.541-0.614) 0.570 (0.530-0.309) 0.577 (0.540-0.614)
β_β 0.640 (0.598-0.681) 0.607 (0.571-0.643) 0.638 (0.595-0.681) 0.607 (0.569-0.645)
Peaks     
δ_δ 0.812 (0.777-0.848) 0.808 (0.773-0.844) 0.876 (0.854-0.898) 0.871 (0.849-0.893)
δ_θ 0.826 (0.789-0.863) 0.823 (0.786-0.860) 0.892 (0.870-0.914) 0.889 (0.867-0.911)
δ_α 0.688 (0.647-0.730) 0.686 (0.645-0.727) 0.739 (0.703-0.774) 0.735 (0.700-0.771)
δ_β 0.658 (0.613-0.703) 0.634 (0.592-0.677) 0.685 (0.641-0.729) 0.656 (0.613-0.698)
θ_θ 0.697 (0.659-0.735) 0.697 (0.659-0.734) 0.752 (0.721-0.783) 0.751 (0.721-0.781)
θ_α 0.658 (0.617-0.699) 0.650 (0.609-0.690) 0.697 (0.660-0.735) 0.687 (0.650-0.724)
θ_β 0.601 (0.558-0.644) 0.589 (0.549-0.630) 0.615 (0.571-0.659) 0.603 (0.562-0.644)
α_α 0.654 (0.617-0.691) 0.657 (0.620-0.693) 0.672 (0.633-0.710) 0.674 (0.635-0.712)
α_β 0.678 (0.639-0.717) 0.654 (0.616-0.692) 0.689 (0.649-0.729) 0.665 (0.626-0.704)
β_β 0.513 (0.442-0.532) 0.508 (0.467-0.550) 0.491 (0.444-0.537) 0.503 (0.460-0.546)
BIS index     
  0.941 (0.921-0.961) 0.935 (0.914-0.955) 0.935 (0.913-0.957) 0.928 (0.905-0.950)
  1. Data are mean (95% confidence interval)