Table 2.

The top 10 features that impacting the GBDT classifier mostly.

	SF	NSF	Z/t value	P -value	P ′ -value
(A) GBDT-LZC
δ-F8	0.0240 ± 0.0214	0.0298 ± 0.0132	−1.656	0.098	0.098
θ-T3	0.0518 ± 0.0356	0.0566 ± 0.0558	−2.010	0.044	0.060
α-Cz	0.0631 ± 0.0383	0.0745 ± 0.0500	−2.472	0.013	0.032 *
θ-F3	0.0510 ± 0.0352	0.0561 ± 0.0526	−2.032	0.042	0.057
α-Fz	0.0649 ± 0.0384	0.0757 ± 0.0582	−2.424	0.015	0.036 *
θ-T6	0.0531 ± 0.0394	0.0587 ± 0.0528	−1.880	0.060	0.068
TLE
β-T3	0.1119 ± 0.0742	0.1261 ± 0.1133	−2.081	0.037	0.050
β-Pz	0.1100 ± 0.7230	0.1227 ± 0.1024	−2.081	0.037	0.050
α-T6	0.0624 ± 0.0334	0.0742 ± 0.0569	−2.389	0.017	0.038 *
(B) GBDT-KC
δ-T3	0.2245 ± 0.0068	0.2531 ± 0.2333	−1.809	0.070	0.070
θ-F7	0.0503 ± 0.0204	0.0575 ± 0.0555	−1.904	0.057	0.065
Seizure frequency before OXC
θ-FP1	0.0521 ± 0.038	0.0573 ± 0.0566	−1.928	0.054	0.061
θ-T6	0.0537 ± 0.0398	0.0594 ± 0.0535	−1.904	0.057	0.065
θ-Fz	0.0505 ± 0.0371	0.0564 ± 0.0540	−2.105	0.035	0.044 *
β-T6	0.1116 ± 0.0728	0.1250 ± 0.1084	−2.105	0.035	0.044 *
β-O2	0.1109 ± 0.0704	0.1244 ± 0.1148	−2.200	0.028	0.031 *
Seizure circadian rhythm
α-Pz	0.0645 ± 0.037	0.0753 ± 0.0542	−2.306	0.021	0.028 *

GBDT, gradient boosting decision tree; LZC, Lempel-Ziv complexity; KC, Kolmogorov complexity; SF, seizure-free; NSF, not seizure-free; TLE, temporal lobe epilepsy; δ-F8, δ band from F8 channel; OXC, oxcarbazepine; P′-value refers to P-value that is corrected by false discovery rate correction.

^*The features that have statistically significance. Although the selected features may not be statistically significant, they did have a classification value in the model.

Bold values are statistically significant.