| Fixed level NIV | AE AVAPS | |||
| Actigraphy | PSG | PSG | Actigraphy | |
| TST (min) | 321±104 | 285±74 | 387±86 | 321±68 |
| Sleep efficiency (%) | 68±15* | 52±9 | 65±12 | 76±11* |
| AHI (/hr) | 5±7 | 7±8 | ||
| Mean SpO2 (%) | 92±6 | 94±3 | ||
| Mean tcCO2 (kPa) | 7.0±1.5 | 6.9±1.7 | ||
| Sleep comfort (VAS) | 5.0±2.1 | 5.3±2.4 |
*P<0.05