Polysomnographical data in 75 sleep studies and cardiorespiratory polygraphical parameters in the 68 valid recordings
| Parameter | Polysomnography | Polygraphy |
| Total recording time min | 395.9±30.6 | 436.6±42 |
| Total sleep time min | 315.9±54.2 | |
| Sleep efficiency % | 79.8±12.2 | |
| Stages 1–2 of total sleep time % | 74.9±11.5 | |
| Stages 3–4 of total sleep time % | 12.6±8.7 | |
| Rapid-eye movement of total sleep time % | 12.1±7 | |
| AHI/RDI | 11.6±14 | 10.5±8.7 |
| Basal Sa,O2 % | 97±2.6 | 95±1.9 |
| Nadir Sa,O2 % | 83.5±7.3 | 79.7±11.6 |
| Percentage of total recoding time with Sa,O2 <90% | 5.2±1 | 5.1±2.2 |
Data are presented as mean±sd
AHI: Apnoea-hypopnoea index
RDI: respiratory disturbance index
Sa,O2: arterial oxygen saturation