Baseline polysomnography data of the studied patients (n=36)
| Parameters | Results |
|---|---|
| ODI (events/hour)* | 25.7 (16.0–49.1) |
| AHI (events/hour)* | 28.1 (19.0–57.0) |
| Obstructive apnoea (events/hour)* | 15.2 (6.7–31.4) |
| Central apnoea (events/hour)* | 0.1 (0.0–0.5) |
| Mixed apnoea (events/hour)* | 0.2 (0.0–1.9) |
| Obstructive hypopnoea (events/hour)* | 7.8 (1.2–14.3) |
| Supine AHI (events/hour) | 43.2 (27.0) |
| REM AHI (events/hour) | 36.7 (24.9) |
| Arousal index (events/hour) | 28.7 (14.8) |
| SpO2 asleep (%) | 93.3 (1.6) |
| Nadir SpO2 asleep (%)* | 80.5 (74.0–85.0) |
| Total sleep time (min) | 337.5 (75.3) |
| Time in bed (min) | 448.4 (51.8) |
| Sleep efficiency (%) | 74.9 (15.1) |
| Sleep onset (min)* | 18.8 (9.0–39.1) |
| Wake after sleep onset (min)* | 79.0 (35.9–117.2) |
| REM latency (min)* | 131.0 (69.5–162.5) |
| Sleep stage N1 (%)* | 13.0 (8.3–18.7) |
| Sleep stage N2 (%) | 50.7 (15.1) |
| Sleep stage N3 (%) | 16.3 (12.8) |
| Sleep stage REM (%) | 15.7 (9.3) |
| Snoring time (min)* | 43.3 (15.2–72.4) |
| Snoring time (%)* | 13.2 (5.5–22.3) |
*Data were non-normally distributed and are expressed as median and IQR.
Sleep stages and snoring time are expressed as percentage of time asleep.
AHI, apnoea-hypopnoea index; N1–N3, non-REM sleep stages 1–3; ODI, 4% oxygen desaturation index; REM, rapid eye movement; SpO2, oxygen saturation.