AHI	Apnea–Hypopnea Index
BMI	Body Mass Index
CI	Confidence Interval
CLOSDUR	Eye-Closure Duration
DRTA	Drowsiness-Related Traffic Accident
EDS	Excessive Daytime Sleepiness
EEG	Electroencephalography
ESS	Epworth Sleepiness Scale
IQR	Interquartile Range
LOWESS	Locally Weighted Scatterplot Smoothing
OR	Odds Ratio
OSA	Obstructive Sleep Apnea
PERCLOS	Percentage of Eyelid Closure Over Time