Chronobiol Med > Volume 3(2); 2021 > Article |
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Conflicts of Interest
Author Contributions
Conceptualization: Sei Won Kim, Sang Haak Lee, Hyeon Hui Kang. Formal analysis: Hwan Hee Kim, Heayon Lee, In Kyoung Kim, Sei Won Kim. Methodology: In Kyoung Kim, Sei Won Kim. Project administration: Hyeon Hui Kang. Resources: Hwan Hee Kim, Heayon Lee, Sei Won Kim, Sang Haak Lee, Hyeon Hui Kang. Writing—original draft: Sei Won Kim. Writing—review & editing: Sei Won Kim, Sang Haak Lee, Hyeon Hui Kang.
Characteristics | Mild OSA (n=10) | Moderate-to-severe OSA (n = 30) | p-value |
---|---|---|---|
Male | 5 (50.0) | 24 (80.0) | 0.152 |
Age (years) | 55.8±21.1 | 52.8±15.9 | 0.642 |
BMI (kg/m2) | 26.9 [22.9, 28.7] | 29.0 [25.5, 30.4] | 0.310 |
Neck circumference (cm) | 38.5 [34.0, 41.0] | 38.0 [37.0, 41.0] | 0.686 |
Waist circumference (cm) | 98.5 [90.0, 104.0] | 98.0 [90.0, 110.0] | 0.479 |
Smoking | 0.505 | ||
Never-smoker | 6 (60.0) | 13 (43.3) | |
Current smoker | 1 (10.0) | 8 (26.7) | |
Ex-smoker | 3 (30.0) | 9 (30.0) | |
Amount of smoking (PYRS) | 0.0 [0.0, 20.0] | 8.5 [0.0, 15.0] | 0.765 |
Hypertension | 3 (30.0) | 12 (40.0) | 0.850 |
SBP (mm Hg) | 128.2±11.1 | 122.9±11.2 | 0.200 |
DBP (mm Hg) | 85.0±11.0 | 80.9±9.9 | 0.281 |
Total sleep time (min) | 340.9±58.1 | 313.7±62.9 | 0.236 |
Sleep efficiency (%) | 87.8 [77.1, 94.8] | 82.4 [72.1, 90.4] | 0.272 |
AHI (events/h) | 8.7±4.6 | 46.4±24.6 | <0.001* |
SpO2, nadir (%) | 88.5 [88.0, 91.0] | 81.5 [76.0, 86.0] | <0.001* |
SpO2, mean (%) | 95.5 [95.0, 96.0] | 93.0 [90.0, 94.0] | <0.001* |
Epworth Sleepiness Scale | 9.3±4.9 | 9.3±4.6 | 0.985 |
Krebs von den Lungen-6 (U/mL) | 180.8 [135.3, 213.8] | 281.5 [171.3, 410.6] | 0.018* |
Female |
Male |
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---|---|---|---|---|---|---|
Mild OSA (n=5) | Moderate-to-severe OSA (n=6) | p-value | Mild OSA (n=5) | Moderate-to-severe OSA (n=24) | p-value | |
Age (years) | 56.2±23.7 | 65.8±10.5 | 0.391 | 55.4±21.1 | 49.6±15.5 | 0.479 |
BMI (kg/m2) | 26.7±7.2 | 27.4±2.3 | 0.852 | 27.5 [27.2, 28.7] | 29.5 [25.6, 31.8] | 0.603 |
Smoking | 1.000 | 0.535 | ||||
Never smoker | 5 (100.0) | 5 (83.3) | 1 (20.0) | 8 (33.3) | ||
Current smoker | 0 (0.0) | 0 (0.0) | 1 (20.0) | 8 (33.3) | ||
Ex-smoker | 0 (0.0) | 1 (16.7) | 3 (60.0) | 8 (33.3) | ||
Amount of smoking (PYRS) | 0.0 [0.0, 0.0] | 0.0 [0.0, 0.0] | 0.465 | 20.0 [15.0, 20.0] | 10.0 [0.0, 20.0] | 0.213 |
Neck circumference (cm) | 35.0±2.5 | 35.7±1.9 | 0.628 | 41.0 [40.0, 43.0] | 39.0 [38.0, 41.5] | 0.237 |
Waist circumference (cm) | 93.8±10.9 | 94.3±6.8 | 0.923 | 104.0 [97.0, 104.0] | 102.0 [90.5, 111.0] | 0.719 |
Hypertension | 2 (40.0) | 5 (83.3) | 0.391 | 1 (20.0) | 7 (29.2) | >0.999 |
SBP (mm Hg) | 124.0 [120.0, 130.0] | 120.0 [120.0, 130.0] | 0.922 | 130.0 [128.0, 140.0] | 120.0 [119.0, 130.0] | 0.088 |
DBP (mm Hg) | 79.2±10.2 | 81.7±7.5 | 0.654 | 90.8±9.1 | 80.7±10.5 | 0.059 |
Total sleep time (min) | 326.9±72.3 | 305.8±74.3 | 0.647 | 354.9±43.3 | 315.7±61.4 | 0.188 |
Sleep efficiency (%) | 82.3±13.9 | 72.4±15.8 | 0.307 | 90.6 [85.1, 94.8] | 84.0 [78.2, 91.0] | 0.295 |
AHI (events/h) | 8.1±5.5 | 29.0±9.1 | 0.002* | 9.3±4.1 | 51.1±24.8 | <0.001* |
SpO2, nadir (%) | 90.2±2.2 | 83.8±3.7 | 0.008* | 88.0 [88.0, 89.0] | 79.0 [75.5, 86.0] | 0.026* |
SpO2, mean (%) | 96.2±0.8 | 93.8±2.1 | 0.046* | 95.0 [95.0, 95.0] | 93.0 [90.0, 93.5] | 0.010* |
Epworth Sleepiness Scale | 8.0 [7.0, 10.0] | 6.0 [6.0, 7.0] | 0.160 | 8.2±3.6 | 9.8±4.7 | 0.484 |
Krebs von den Lungen-6 (U/mL) | 168.3±48.2 | 252.4±119.1 | 0.175 | 190.3 [137.7, 213.8] | 292.6 [179.1, 426.6] | 0.068 |
Simple regression |
Multiple regression (R2=0.326, p=0.008) |
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---|---|---|---|---|---|---|
Beta | SE | p-value | Beta | SE | p-value | |
Female | -1.420 | 0.35 | 0.164 | -0.118 | 0.42 | 0.907 |
Neck circumference | 1.321 | 0.16 | 0.195 | -1.002 | 0.28 | 0.324 |
Waist circumference | 1.947 | 0.16 | 0.059 | 1.780 | 0.22 | 0.085 |
Amount of smoking | 2.594 | 0.15 | 0.014* | 2.626 | 0.18 | 0.012* |
AHI | 1.558 | 0.16 | 0.128 | -1.091 | 0.23 | 0.283 |
Moderate-to-severe OSA | 2.259 | 0.15 | 0.030* | 2.256 | 0.2 | 0.031* |
Obstructive Sleep Apnea and Chronic Lung Disease2019 March;1(1)