AHI	Apnea-hypopnea index number of apnea/hypopnea events per hour of sleep
BMI	Body mass index
EDS	Excessive daytime sleepiness
ODI	Oxygen desaturation index. The average number of desaturations of 3% or more per hour of sleep
TST	Percentage of total sleep time spent with an oxyhemoglobin saturation below 90% with SaO2 < 90%
ESS	Epworth sleepiness scale
T90	Percentage of epoch spent at oxygen saturation levels < 90%. T90 ≥ 30% indicates Nocturnal respiratory failure
WASO	wake after sleep onset