Table 1.
Group pre- and post-maxillomandibular advancement (MMA) demographic- and polysomnographic-matched pair data.
| n | Pre-MMA (mean ± SD) |
Post MMA (mean ± SD) |
P value | |
|---|---|---|---|---|
| ESS | 14 | 13.6 ± 5.4 | 8.8 ± 3.3 | 0.0063** |
| BMI (kg/m2) | 18 | 30.5 ± 6.0 | 30.3 ± 5.3 | 0.7 |
| AHI (number/hour) | 24 | 45.4 ± 26.4 | 7.8 ± 10.5 | <0.0001** |
| Sleep efficiency (%) | 17 | 72.2 ± 18.9 | 78.6 ± 16.7 | 0.2 |
| Stage N1 (%) | 15 | 22.3 ± 15.9 | 14.2 ± 11.2 | 0.08 |
| Stage N2 (%) | 15 | 55.4 ± 12.1 | 55.3 ± 8.3 | 0.97 |
| Stage N3 (%) | 15 | 10.7 ± 10.2 | 15.3 ± 8.3 | 0.04** |
| Stage R (%) | 16 | 9.1 ± 7.2 | 15.2 ± 6.9 | 0.0078** |
| Respiratory-related arousals (events/hour) | 12 | 49.0 ± 21.4 | 11.5 ± 14.9 | 0.0002** |
| Lowest oxyhemoglobin saturation (%) | 21 | 81.2 ± 8.0 | 86.2 ± 5.6 | 0.03** |
| Time in supine position (%) | 12 | 44.4 ± 28.5 | 41.7 ± 28.9 | 0.7 |
Abbreviations: SD: standard deviation; ESS: Epworth Sleepiness Scale; BMI: body mass index (kg/m2); AHI: apnea-hypopnea index (apneas and hypopneas per hour of sleep); N: non-rapid eye movement sleep; R: rapid eye movement sleep.