Table 4.

The group-averaged results of all CA indices of the optimal quality Group A.

(n=167)	RMCA			LMCA
	10-min	1st 5-min	2nd 5-min	10-min	1st 5-min	2nd 5-min
Time-Domain Indices
ARI	5.1 (3.9 – 6.23)	5.0 (3.40 – 6.53)	4.8 (3.6 – 7.0)	4.5 (3.3 – 6.1)	4.6 (3.2 – 6.4)	4.6 (3.2 – 6.6)
Mx	0.27 (0.16 – 0.44)	0.33 (0.15 – 0.46)	0.34 (0.16 – 0.51)*	0.32 (0.16 – 0.49)	0.38 (0.15 – 0.50)	0.38 (0.20 – 0.53)*
Sx	0.17 (0.06 – 0.31)	0.21 (0.01 – 0.34)	0.22 (0.04 – 0.38)	0.22 (0.08 – 0.37)	0.22 (0.06 – 0.37)	0.26 (0.07 – 0.40)
Dx	0.21 (0.11 – 0.38)	0.26 (0.08 – 0.41)	0.26 (0.09 – 0.42)*	0.26 (0.09 – 0.40)	0.27 (0.11 – 0.41)	0.28 (0.10 – 0.44)
Time-Domain Indices
WPS-Phase
VLF	0.89 (0.43 – 1.23)	0.74 (0.30 – 1.13)	0.72 (0.39 – 1.23)	0.74 (0.37 – 1.06)	0.68 (0.24 – 1.09)	0.77 (0.27 – 1.15)†
LF	0.78 (0.55 – 1.01)	0.77 (0.56 – 0.96)	0.77 (0.55 – 1.06)	0.79 (0.57 – 1.04)	0.76 (0.56 – 1.01)	0.75 (0.53 – 1.08)
WPS-SI
VLF	0.47 (0.38 – 0.59)	0.51 (0.40 – 0.63)***	0.54 (0.44 – 0.65)#	0.48 (0.37 – 0.61)	0.51 (0.41 – 0.63)#	0.56 (0.42 – 0.66)#
LF	0.54 (0.43 – 0.68)	0.60 (0.45 – 0.71)**	0.56 (0.42 – 0.70)§	0.59 (0.43 – 0.70)	0.60 (0.44 – 0.72)**	0.58 (0.45 – 0.69)
TFA-Gain
VLF	0.46 (0.29 – 0.61)	0.48 (0.34 – 0.68)x	0.47 (0.31 – 0.65)	0.43 (0.33 – 0.61)	0.49 (0.32 – 0.67)***	0.45 (0.33 – 0.68)
LF	0.68 (0.45 – 0.91)	0.71 (0.50 – 0.98)*	0.71 (0.51 – 0.97)*	0.68 (0.49 – 0.89)	0.74 (0.55 – 0.96)**	0.71 (0.52 – 0.94)
TFA-Phase
VLF	0.87 (0.56 – 1.16)	0.83 (0.46 – 1.17)	0.85 (0.44 – 1.24)	0.81 (0.52 – 1.13)	0.82 (0.42 – 1.21)	0.80 (0.40 – 1.13)
LF	0.55 (0.36 – 0.85)	0.57 (0.34 – 0.83)	0.53 (0.30 – 0.81)	0.57 (0.39 – 0.88)	0.56 (0.32 – 0.85)	0.62 (0.36 – 0.90)
TFA-Coherence
VLF	0.31 (0.20 – 0.42)	0.34 (0.24 – 0.48)**	0.35 (0.25 – 0.48)***	0.33 (0.23 – 0.44)	0.35 (0.23 – 0.50)***	0.39 (0.25 – 0.47)#
LF	0.47 (0.29 – 0.65)	0.51 (0.37 – 0.68)#	0.51 (0.33 – 0.68)***,†	0.47 (0.32 – 0.67)	0.55 (0.36 – 0.72)#	0.52 (0.36 – 0.69)**

Data were presented as median and (IQR). R- and LMCA, right- and left middle cerebral artery; VLF, very low frequency; LF, low frequency.

Comparisons between 5-min and 10-min:

^xp = 0.054;

^*p <0.05;

^**p <0.01;

^***p <0.001;

^#p <0.0001.

Comparisons between the two 5-min epochs:

^†p <0.05;

^§p <0.01.