AHI	apnea–hypopnea index
BMI	body mass index
CD	cluster of differentiation
CV	coefficient of variation
ELISA	enzyme-linked immunosorbent assay
ESS	Epworth Sleep Scale
LOS	lowest oxygen saturation
MOS	mean oxygen saturation
NO	nitric oxide
ODI	oxygen desaturation index
OSAS	obstructive sleep apnea syndrome
OSI	oxidative stress index
p	level of statistical significance
PSG	polysomnography
r	correlation coefficient
ROS	reactive oxygen species
SDB	sleep-disordered breathing
TAS	total antioxidative status
TOS	total oxidative status
VAS	visual analogue scale for snoring