Table 2.
Sleep Characteristics on Baseline Polysomnography*
| Characteristics | Bilevel PAP (n = 13) | CPAP (n = 11) | 95% CI for CPAP-Bilevel PAP |
|---|---|---|---|
| Total sleep time, min | 249 (32) | 296 (31) | − 47, 140 |
| Sleep efficiency, % | 80 (3.6) | 82 (3.3) | − 8, 12 |
| Sleep latency, min | 18 (4.4) | 17 (3.6) | − 13, 11 |
| Rapid eye movement latency, min | 95 (22) | 65 (10) | − 84, 24 |
| Rapid eye movement, % | 12.3 (3.7) | 15.4 (1.9) | − 6.0, 12.2 |
| Arousal index, % | 24.5 (5.4) | 24.8 (3.3) | − 13.4, 14.0 |
| AHI, events/h | 34 (4.8) | 30 (4.4) | − 18, 10 |
| Central apnea index, events/h | 1.3 (0.5) | 1.9 (0.6) | − 0.9, 2.2 |
| Obstructive apnea index, events/h | 12.4 (4.3) | 6.8 (2.7) | − 16.6, 5.4 |
| Hypopnea index, events/h | 19.0 (3.2) | 20.0 (2.1) | − 7.3, 9.2 |
| Desaturation index (> 4%) | 22.8 (5.8) | 19.1 (4.0) | − 18.8, 11.3 |
| Desaturation nadir, % | 78 (2.3) | 80 (2.2) | − 5, 8 |
*
Data are presented as mean (SE) or No. unless otherwise indicated.