TABLE 1.

Demographic and clinical information of the subjects.

Characteristic	OSA-nMCIs (N = 26)	OSA-MCIs (N = 26)	HCs (N = 26)	F/H	p-Value
Age (year)	36.15 ± 9.48	39.26 ± 10.25	39.84 ± 11.18	1.66F	0.961
BMI (Kg/m2)	27.12 ± 4.00	27.27 ± 2.77	19.70 ± 0.98	51.48H	0.000ab
AHI (/h)	54.05 ± 19.06	56.79 ± 24.73	2.35 ± 1.21	51.35H	0.000ab
Education (year)	12.92 ± 3.17	11.61 ± 2.80	12.23 ± 3.76	1.59H	0.452
LSaO2 (%)	65.00 ± 11.73	70.65 ± 12.87	94.03 ± 3.25	52.91H	0.000bc
MSaO2 (%)	90.54 ± 4.91	92.00 ± 3.88	97.11 ± 2.00	34.68H	0.000bc
Total sleep time (min)	450.6 ± 64.38	436.1 ± 44.89	401.8 ± 12.40	17.40H	0.000ab
Sleep efficiency (%)	0.864 ± 0.144	0.849 ± 0.151	91.13 ± 3.201	51.34H	0.000bc
N1 stage (%)	30.51 ± 17.78	28.57 ± 16.69	10.48 ± 3.59	29.15H	0.000ab
N2 stage (%)	39.50 ± 15.41	40.00 ± 12.61	38.99 ± 6.435	0.04H	0.98
N3 stage (%)	22.05 ± 18.37	22.62 ± 17.40	30.63 ± 5.38	11.40H	0.003ab
REM (%)	7.74 ± 7.31	8.10 ± 8.93	20.46 ± 6.36	30.46H	0.000ab
SaO2 < 90%	25.60 ± 18.35	25.39 ± 20.75	0.23 ± 0.17	51.01H	0.000ab
AI (/h)	38.20 ± 21.91	36.80 ± 23.80	11.65 ± 2.97	34.26H	0.000ab
MOCA	27.34 ± 1.26	22.84 ± 2.80	27.57 ± 1.67	49.99H	0.000bc
ESS	11.61 ± 4.15	11.96 ± 4.13	3.03 ± 1.82	46.30H	0.000ab
Head movement	0.20 ± 0.10	0.16 ± 0.07	0.11 ± 0.07	8.481F	0.000ab

BMI, body mass index, AHI, apnea hypopnea index; LSaO2, minimum blood oxygen saturation; MSaO2, average blood oxygen saturation; REM, rapid eye movement; SaO2 < 90%, percentage of total sleep time with oxygen saturation less than 90; AI, arousal index; MOCA, Montreal Cognitive Assessment; ESS, Epworth Sleepiness Scale; F, analysis of variance; H, Kruskal–Wallis test.

^aSignificant difference between HCs and OSA-nMCIs in post hoc analysis.

^bSignificant difference between HCs and OSA-MCIs in post hoc analysis.

^cSignificant difference between OSA-nMCIs and OSA-MCIs in post hoc analysis.