Table 1. Characteristics of Study Participants.
| Variable | Mean (SD) [Range] |
|---|---|
| Sex, No. (%) | |
| Male | 22 (85) |
| Female | 4 (15) |
| Age, y | 44.7 (10.3) [26-63] |
| BMI | 26.8 (4.4) [20.7-36.7] |
| AHI, events/h | 41.9 (17.2) [15.2-78.1] |
| REM-AHI, events/h | 44.6 (15.4) [9.5-73.2] |
| NREM-AHI, events/h | 41.3 (18.7) [11.4-81.3] |
| Nadir of SpO2, % | 79.8 (12.2) [41.0-95.0] |
| Duration of SpO2 < 90%, min | 34.3 (46.2) [0-160.1] |
| ESS score | 8.9 (4.6) [3-18] |
| Friedman tonsil grade | 1.4 (0.8) [0-3] |
| Friedman palatal or tongue position | 2.7 (0.5) [1-3] |
| Friedman stage | 2.6 (0.7) [1-3] |
Abbreviations: AHI, apnea-hypopnea index; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); ESS, Epworth Sleepiness Scale; NREM-AHI, AHI during non-rapid eye movement; REM-AHI, AHI during rapid-eye movement; SpO2, peripheral capillary oxygen saturation.