Table 2.
Respiratory events, sleep structure during overnight titration, and the subject number at different titrated pressure (mean ± SE)
| Parameter | Baseline | Manual titration | p value |
|---|---|---|---|
| Total record time (min) | 497.5 ± 4.3 | 502.4 ± 4.6 | 0.373 |
| Total sleep time (min) | 396.7 ± 5.9 | 415.1 ± 6.1 | 0.006 |
| Sleep onset latency (min) | 19.7 ± 2.2 | 22.3 ± 3.1 | 0.491 |
| Sleep Efficiency (%) | 80.2 ± 1.2 | 82.4 ± 1.3 | 0.120 |
| Arousal index (events/h) | 33.2 ± 1.8 | 10.8 ± 0.4 | 0.000 |
| REM sleep (%) | 16.8 ± 0.6 | 23.2 ± 0.7 | 0.000 |
| Stage 1 (%) | 24.8 ± 1.3 | 15.4 ± 0.9 | 0.000 |
| Stage 2 (%) | 52.1 ± 1.1 | 53.0 ± 1.1 | 0.482 |
| Stage 3 (%) | 6.2 ± 0.6 | 8.4 ± 0.8 | 0.006 |
| AHI (events/h) | 42.5 ± 2.2 | 4.7 ± 0.4 | 0.000 |
| OAI (events/h) | 20.5 ± 1.7 | 0.9 ± 0.1 | 0.000 |
| CAI (events/h) | 2.3 ± 0.3 | 0.9 ± 0.1 | 0.000 |
| MAI (events/h) | 4.8 ± 0.7 | 0.1 ± 0.0 | 0.000 |
| HI (events/h) | 14.8 ± 1.0 | 2.8 ± 0.2 | 0.000 |
| Sleep time mean SaO2 (%) | 94.0 ± 0.3 | 96.2 ± 0.1 | 0.000 |
| Lowest SaO2 (%) | 75.9 ± 1.1 | 88.0 ± 0.9 | 0.000 |
| ODI (events/h) | 30.6 ± 2.1 | 3.6 ± 0.3 | 0.000 |
| Pressure ≤ 6 cmH2O (n, %) | 61 (48.0%) | ||
| Pressure 7–8 cmH2O (n, %) | 41(32.3%) | ||
| Pressure 9–10 cmH2O (n, %) | 19 (15.0%) | ||
| Pressure ≥ 11 cmH2O | 6 (4.7%) |