AASM	American Academy of Sleep Medicine
AHI	apnea/hypopnea index
BMI	body mass index
C.I.	confidence interval
ELISA	enzyme-linked immunosorbent assay
ESP	expansion sphincter pharyngoplasty
ESS	Epworth Sleep Scale
hs-CRP	high-sensitivity C-Reactive Protein
IL-6	interleukin 6
IQR	inter-quartile range
LOS	lowest oxygen saturation
modified U3P	modified uvulopalatopharyngoplasty
MOS	mean oxygen saturation
ODI	oxygen saturation index
OSAS	obstructive sleep apnea syndrome
p	level of statistical significance
PAP	positive airway pressure
r	correlation coefficient
SD	standard deviation
SDB	sleep-disordered breathing
SF-36	36-item Short Form Health Survey
TNF-α	tumor necrosis factor α
VAS	visual scale of snoring
vs.	versus