Table 1 The classification performance of each time-domain feature under the optimal frequency and time strategy.

	AUC	ACC	F1 score	TPR	TNR	PPV	NPV
Feature group A	0.751 ± 0.097	0.668 ± 0.111	0.706 ± 0.086	0.658 ± 0.091	0.706 ± 0.135	0.691 ± 0.030	0.647 ± 0.034
Feature group B	0.748 ± 0.163	0.824 ± 0.135	0.867 ± 0.076	0.801 ± 0.020	0.794 ± 0.071	0.800 ± 0.076	0.801 ± 0.158
Feature group C	0.789 ± 0.185	0.656 ± 0.089	0.644 ± 0.091	0.658 ± 0.135	0.665 ± 0.030	0.654 ± 0.131	0.644 ± 0.157
Feature group D	0.778 ± 0.162	0.646 ± 0.147	0.658 ± 0.091	0.665 ± 0.156	0.647 ± 0.034	0.644 ± 0.104	0.633 ± 0.184
Feature group E	0.808 ± 0.212	0.783 ± 0.186	0.766 ± 0.109	0.748 ± 0.051	0.761 ± 0.104	0.738 ± 0.051	0.748 ± 0.073
Feature group F	0.838 ± 0.048	0.734 ± 0.093	0.748 ± 0.036	0.723 ± 0.131	0.718 ± 0.157	0.748 ± 0.073	0.766 ± 0.109
Feature group G	0.786 ± 0.204	0.773 ± 0.120	0.766 ± 0.109	0.738 ± 0.051	0.748 ± 0.073	0.766 ± 0.109	0.766 ± 0.109
Feature group H	0.784 ± 0.152	0.643 ± 0.133	0.633 ± 0.184	0.654 ± 0.034	0.692 ± 0.261	0.654 ± 0.034	0.658 ± 0.123
Feature group H	0.825 ± 0.143	0.757 ± 0.101	0.748 ± 0.073	0.766 ± 0.109	0.753 ± 0.036	0.761 ± 0.104	0.766 ± 0.020

Significant values are in [bold].
The optimal frequency band and window length for each feature were as follows. Values in bold represent the best results within each column. Feature group A: frequency of 1–3 Hz, length of 28 s; Feature group B: frequency of 39–41 Hz, length of 210 s; Feature group C: frequency of 3–5 Hz, length of 270 s; Feature group D: frequency of 42–44 Hz, length of 14 s; Feature group E: frequency of 22–24 Hz, length of 270 s; Feature group F: frequency of 37–39 Hz, length of 300 s; Feature group G: frequency of 27–29 Hz, length of 150 s; Feature group H: frequency of 31–33 Hz, length of 150 s and Feature group I: frequency of 36–38 Hz, length of 180 s.
AUC, area under the receiver-operating characteristic curve; ACC, accuracy; TPR, true positive rate; TNR, true negative rate; PPV, positive predictive value; NPV, negative predictive value.

Search