Table 3.
Respiratory and sleep variables of the 18 patients with OSA without MAA in situ and with MAA in situ.
| Outcome Variables | Without MAAa | With MAAa | Testb | P* |
|---|---|---|---|---|
| Sleep | ||||
| TST (h) | 6.0|6.5|7.3 | 5.8|6.5|7.7 | Z = −0.675 | .500 |
| N1 (%) | 11.1 ± 4.8 | 9.8 ± 3.8 | T = 1.743 | .000* |
| N2 (%) | 65.8 ± 5.1 | 62.0 ± 5.8 | T = 2.423 | .234 |
| N3 (%) | 0.4|2.7|7.9 | 2.0|7.2|9.5 | Z = −1.965 | .049* |
| REM (%) | 19.1 ± 3.9 | 21.7 ± 5.2 | T = −2.329 | .050 |
| Sleep efficiency (%) | 88 ± 6.7 | 87.4 ± 6.0 | T = 0.360 | .616 |
| Total AI (events/h) | 18.0 ± 7.5 | 13.9 ± 5.4 | T = 2.693 | .015* |
| Respiratory AI (events/h) | 3.7|6.6|14.2 | 2.3|3.3|7.2 | Z = −2.896 | .004* |
| Non-Respiratory AI (events/h) | 9.0 ± 4.0 | 9.2 ± 4.2 | T = −0.234 | .818 |
| Respiratory | ||||
| AHI (events/h) | 10.0|18.4|30.3 | 4.2|9.6|22.9 | Z = −2.984 | .003*, |
| ODI (events/h) | 20.7 ± 15.27 | 13.5 ± 9.8 | T = 2.338 | .017* |
| Desaturation (min) | 135.8 ± 107.8 | 84.8 ± 66.6 | T = 2.552 | .010*, |
| Snoring time (min) | 30.3 ± 21.1 | 18.0 ± 20.6 | T = 2.992 | .004* |
*
A P-value of < 0.05 is considered statistically significant. aPercentiles in 25%|median|75% for nonnormally distributed data; mean ± SD for normally distributed data. bT = paired sample t test; Z = Wilcoxon signed-rank test analysis. AHI = apnea-hypopnea index, AI = arousal index, N 1−3 = Non-REM sleep stages, ODI = oxygen desaturation index, REM = rapid eye movement sleep, SD = standard deviation, Total AI = sum of respiratory AI and nonrespiratory AI.