Table 2 Polysomnography results
From: Obstructive sleep apnoea accelerates FEV1 decline in asthmatic patients
Characteristics | No OSA | Mild-Moderate OSA | Severe OSA | p value |
|---|---|---|---|---|
n = 10 | n = 33 | n = 34 | ||
Total sleep time (minutes) | 288.2 ± 88.2 | 268.3 ± 80.7 | 253.8 ± 74.6 | 0.207 |
Sleep efficiency (%) | 76.1 ± 22.9 | 75.8 ± 16.1 | 72.1 ± 18.0 | 0.506 |
AHI event. h−1 | 2.4 ± 1.5 | 16.2 ± 6.6 | 61.4 ± 20.0 | 0.001 |
ODI event. h−1 | 1.7 ± 1.7 | 14.5 ± 6.1 | 52.1 ± 22.8 | 0.001 |
Average SaO2 (%) | 95.0 ± 1.3 | 93.1 ± 3.0 | 91.4 ± 3.3 | 0.001 |
Lowest SaO2 (%) | 88.2 ± 6.0 | 82.2 ± 5.5 | 74.7 ± 9.7 | 0.001 |
SaO2 < 90% (%) | 0 ± 0 | 9.1 ± 18.2 | 20.5 ± 25.9 | 0.001 |
SaO2 < 80% (%) | 0 ± 0 | 0.2 ± 0.4 | 3.3 ± 5.2 | 0.021 |
Wake % | 13.9 ± 8.1 | 22.4 ± 13.7 | 22.7 ± 17.8 | 0.226 |
N1 % | 20.8 ± 11.0 | 16.5 ± 11.0 | 22.3 ± 10.7 | 0.423 |
N2 % | 27.6 ± 11.5 | 28.8 ± 11.2 | 34.1 ± 14.1 | 0.125 |
N3 % | 23.6 ± 8.4 | 22.1 ± 10.8 | 13.4 ± 9.8 | 0.001 |
REM % | 14.1 ± 3.4 | 10.3 ± 8.5 | 7.4 ± 5.9 | 0.013 |