Table 2: Characteristics of the sample according to the severity of obstructive sleep apnea syndrome. Data are expressed as mean ± standard deviation or median [25th; 75thpercentiles]. BMI: Body Mass Index; OAHI: Obstructive Apnea Hypopnea Index; ODI: Oxygen Desaturation Index; OSAHS: Obstructive Sleep Apnea Hypopnea Syndrome; SHS: Severity Hierarchy Score. OSAHS was defined as followed: absence if OAHI < 1.5, mild if OAHI between 1.5 (included) and 5 (not included), moderate if OAHI between 5 (included) and 10 (not included), and severe if OAHI ≥10. * One missing data (n = 15).