Comparison between three groups
| Variable | Group W | Group N | Group O | P-value |
|---|---|---|---|---|
| Epidermiologic data | ||||
| Age (y) | 49.5±15.2 | 39.7±13.2 | 45.4±11.1 | 0.28 |
| Sex (male:female) | 17:5 | 5:1 | 36:5 | 0.71 |
| BMI (kg/m2) | 22.8±1.7 | 22.3±2.5 | 27.6±2.6 | <0.01 |
| ESS | 9.6±3.9 | 10.8±4.4 | 9.8±5.1 | 0.90 |
| Polysomnographic data | ||||
| T-AHI | 27.3±21.7 | 17.0±9.7 | 37.8±26.2 | 0.13 |
| REM AHI | 25.1±25.7 | 22.1±29.0 | 34.6±27.7 | 0.21 |
| NREM AHI | 27.1±22.8 | 16.9±9.1 | 38.0±26.7 | 0.16 |
| REM/NREM AHI | 1.3±1.9 | 1.2±1.4 | 1.2±1.1 | 0.81 |
| Non-supine/supine AHI | 0.2±0.2 | 0.1±0.0 | 0.2±0.3 | 0.19 |
| T-mSaO2 (%) | 93.5±2.3 | 94.6±1.1 | 93.4±2.0 | 0.41 |
| REM mSaO2 (%) | 91.8±4.3 | 94.6±1.0 | 91.5±4.6 | 0.11 |
| NREM mSaO2 (%) | 92.7±2.8 | 94.4±0.8 | 92.3±2.7 | 0.11 |
Values are presented as number only or mean±standard deviation.
Group W, non-obese & wide oropharynx group; Group N, non-obese & narrow oropharynx group; Group O, obese group; BMI, body mass index; ESS, Epworth sleepiness score; T-AHI, AHI during total sleep time; REM AHI, AHI during REM sleep; NREM AHI, AHI during NREM sleep; REM/NREM AHI, ratio of REM AHI to NREM AHI; T-mSaO2, mean arterial oxygen saturation during total sleep; REM mSaO2, mean SaO2 during REM sleep; NREM mSaO2, mean SaO2 during NREM sleep.