Table 1. Anthropometric and overnight PSG characteristics of the study population (n=22).

Characteristic	Value
Age, years	50.6±11.1
Sex, male:female	20:2
Neck circumference, cm	40.4±4.6
Body mass index, kg/m2	27.0±4.8
Positional dependency	9/12
REM dependency	3/22

Data are n or mean±SD values.

AHI: apnea-hypopnea index (apnea and hypopnea episodes per hour of sleep), Peff: effective pressure, PSG: polysomnography, REM: rapid eye movement, TST: total sleep time.