. 2020 Dec 11;11:580408. doi: 10.3389/fneur.2020.580408

Table 3.

Basic clinical characteristics of the subjects included in the functional connectivity analysis.

	Obstructive sleep	HC (n = 15)	P
	apnea (n = 15)
Age (year)^a	42.87 ± 12.17	39.67 ± 12.52	0.484
Men/women^c	13/2	12/3	0.775
Education (year)^b	12 (9–16)	15 (9–16)	0.461
BMI (kg/m²)^a	28.44 ± 3.38	27.16 ± 1.57	0.199
Smoking index^b	0 (0–400)	0 (0–300)	0.838
Drinking index^b	0 (0–500)	0 (0–0)	0.902
ESS scores^a	12.4 ± 3.62	8.14 ± 4.03	0.006^**
Nocturnal SP (mmHg)^a	138.9 ± 16.31	124.8 ± 8.87	0.006^**
Nocturnal DP (mmHg)^b	92 (92–102)	75 (70–78)	<0.001^**
Heart rate (beats/min)^a	92.9 ± 12.55	77.1 ± 8.41	<0.001^**
AHI (events/h)^a	58.9 ± 22.74	2.17 ± 1.26	<0.001^**
ODI (events/h)^a	52.9 ± 25.21	1.61 ± 0.93	<0.001^**
LSaO₂ (%)^a	67.2 ± 14.41	90.6 ± 3.06	<0.001^**
MSaO₂ (%)^b	92 (94–96)	96 (95–97)	0.005^**
Total sleep time (min)^b	328.5 (190–447.5)	420 (333.5–432.5)	0.217
Sleep efficiency (%)^a	58.1 ± 24.5	73.98 ± 8.45	0.029^*
N1 stage/TST (%)^a	32.6 ± 20.28	21.4 ± 11.81	0.075
N2 stage/TST (%)^a	53.3 ± 19.24	50.3 ± 16.71	0.647
Light sleep/TST (%)^b	58.1 ± 24.5	69.3 ± 10.56	0.120
N3 stage/TST (%)^b	4.4 (0.3–11.8)	21.2 (10.8–24.5)	0.106
REM/TST (%)^b	3.8 (1.3–7.5)	11.8 (5.4–18.7)	0.007^**
Mean head motion (cm)^a	0.1 ± 0.0315	0.078 ± 0.015	0.021^*

HC, healthy control; AHI, apnea–hypopnea index; ODI, oxygen desaturation index; LSaO₂, lowest oxygen saturation; MSaO₂, mean oxygen saturation; BMI, body mass index; ESS, Epworth Sleepiness Scale; SP, systolic pressure; DP, diastolic pressure; TST, total sleep time; REM, rapid eye movement.

p < 0.05 and

^**

p < 0.01.

Student's t-test (data are shown as mean ± standard deviation).

Mann–Whitney U-test [data are shown as median (interquartile range)].

Chi-square test (data are presented as number of people).