TABLE 3.

Twenty EEMD-based entropy features extracted from normal and SCD HRV signals 1st 2-min and 1st 5-min before SCD occurrence.

Feature	1st 2-min		P-Value	1st 5-min		P-Value
	Normal	SCD		Normal	SCD
FuEn1	0.0021 ± 0.0023	0.027 ± 0.025	6.6e−6	0.0023 ± 0.003	0.018 ± 0.023	9.3e−5
FuEn2	0.0018 ± 0.0016	0.0051 ± 0.005	3.35e−4	0.0017 ± 0.004	0.004 ± 0.005	4.15e−4
FuEn3	7.8e−4 ± 5.8e−4	0.0046 ± 0.008	0.005	7.8e−4 ± 6.4e−4	0.0033 ± 0.004	9.3e−4
FuEn4	4.9e−4 ± 7.1e−4	0.0027 ± 0.004	0.002	4.8e−4 ± 5.5e−4	0.0023 ± 0.004	0.003
DisEn1	3.311 ± 0.71	2.793 ± 0.466	2.15e−8	3.33 ± 0.194	2.916 ± 0.419	6.67e−7
DisEn2	3.029 ± 0.15	2.99 ± 0.479	0.6926	3.06 ± 0.217	3.067 ± 0.402	0.913
DisEn3	2.683 ± 0.11	2.61 ± 0.443	0.279	2.711 ± 0.114	2.634 ± 0.353	0.021
DisEn4	2.294 ± 0.13	2.33 ± 0.234	0.403	2.301 ± 0.128	2.336 ± 0.278	0.495
IMPE1	1.742 ± 0.034	1.75 ± 0.0203	0.3961	1.75 ± 0.026	1.762 ± 0.081	0.024
IMPE2	1.708 ± 0.045	1.76 ± 0.0273	2.1e−7	1.73 ± 0.048	1.767 ± 0.018	3.4e−5
IMPE3	1.416 ± 0.084	1.52 ± 0.073	1.3e−7	1.45 ± 0.048	1.523 ± 0.051	4.2e−8
IMPE4	1.089 ± 0.078	1.17 ± 0.109	1.4e−4	1.15 ± 0.053	1.211 ± 0.0822	3.0e−4
RdisE1	0.885 ± 0.051	0.778 ± 0.1275	1.08e−5	0.843 ± 0.065	0.76 ± 0.135	0.003
RdisEn2	0.857 ± 0.04	0.815 ± 0.113	0.036	0.818 ± 0.06	0.795 ± 0.117	0.3
RdisEn3	0.897 ± 0.03	0.83 ± 0.111	8.07e−4	0.848 ± 0.04	0.789 ± 0.111	0.003
RdisEn4	0.916 ± 0.025	0.878 ± 0.073	0.003	0.857 ± 0.043	0.835 ± 0.102	0.238
RenEn1	13.204 ± 1.29	11.92 ± 1.21	2.66e−5	14.95 ± 1.76	13.61 ± 1.442	4.8e−4
RenEn2	10.961 ± 1.46	12.08 ± 1.81	0.004	12.83 ± 1.41	13.74 ± 1.401	0.006
RenEn3	8.948 ± 1.73	9.36 ± 1.57	0.278	11.59 ± 1.49	12.445 ± 1.73	0.025
RenEn 4	5.996 ± 1.31	6.96 ± 1.84	0.011	9.5 ± 1.49	9.88 ± 1.643	0.405