Table 1.

Demographic and clinical characteristics

	OSAHS (n = 18)	Healthy controls (n = 18)	t	P
Sex, M/F	16/2	16/2
Age, yrs	44.2 ± 12.2	37.6 ± 10.4	1.76	0.087
Education, yrs	11.7 ± 2.8	13.7 ± 3.1	-1.83	0.077
AHI, per hour	73.1 ± 27.0	2.5 ± 0.8	11.08	< 0.001*
SIT90, %	40.0 ± 29.7	0.1 ± 0.1	5.70	< 0.001*
ArI, per hour	64.6 ± 30.4	4.6 ± 1.9	8.35	< 0.001*
REM + N3, %	14.7 ± 7.6	40.4 ± 5.5	-11.50	< 0.001*

Data are presented as average ± SD, *P < 0.05

AHI apnea–hypopnea index, SIT₉₀ saturation impair time below 90%, ArI arousal index, REM rapid eye movement, N3 nonrapid eye movement stage 3