Sleep polysomnography details
| Variable | Smoke exposed* | Non-smoke exposed* | p value |
|---|---|---|---|
| *Median (range). | |||
| Central apnoea index | 11.45 (1.5–15) | 8.9 (2.6–41.8) | 0.68 |
| Obstructive apnoea index | 13.3 (1.5–30.4) | 10.8 (3.4–45) | 0.79 |
| REM sleep | |||
| Central apnoea index | 10.5 (4.4–56.4) | 14.8 (4.4–56.4) | 0.74 |
| Obstructive apnoea index | 37.7 (9.5–71.9) | 39.4 (25–64.5) | 0.85 |
| NREM sleep | |||
| Central apnoea index | 5.1 (0.7–22.8) | 4.2 (1.1–25.7) | 0.74 |
| Obstructive apnoea index | 4.1 (1.5–12) | 5.5 (0.5–21) | 0.85 |