Table 1.
Characteristics of all OSAS patients.
| Mild OSAS | Moderate OSAS | Severe OSAS | |
|---|---|---|---|
| Cases, n | 16 | 12 | 19 |
| Age, year | 56.2 ± 6.2 | 53.2 ± 6.5 | 51.6 ± 7.9 |
| Male/Female, n | 9/7 | 10/2 | 17/2 |
| BMI, kg/m2 | 27.7 ± 3.5 | 27.1 ± 2.7 | 28.4 ± 4.4 |
| Neck circumference, cm | 39.1 ± 4.3 | 42.7 ± 5.0 | 46.8 ± 4.9∗ |
| Waist circumference, cm | 112.1 ± 8.5 | 118.2 ± 6.4 | 121.2 ± 9.8∗ |
| AHI, events/h | 9.2 ± 2.9 | 21.0 ± 4.6∗ | 45.6 ± 11.8∗ |
| ODI | 11.8 ± 5.5 | 28.6 ± 12.2∗ | 46.6 ± 16.9∗ |
| ESS | 5.6 ± 3.2 | 10.4 ± 3.2∗ | 12.4 ± 4.5∗ |
| Lowest SpO2, % | 87.5 ± 3.0 | 82.3 ± 3.8∗ | 72.6 ± 5.2∗ |
| Mean SpO2, % | 92.8 ± 3.3 | 91.4 ± 3.3 | 89.8 ± 2.5∗ |
| Time of SpO2 < 90%, min | 8.9 ± 4.8 | 16.1 ± 10.8∗ | 31.1 ± 23.9∗ |
| Systolic BP, mm Hg | 117 ± 14 | 123 ± 14 | 129 ± 20 |
| Diastolic BP, mm Hg | 76 ± 7 | 78 ± 7 | 81 ± 8 |
| Heart rate | 69 ± 6 | 65 ± 6 | 65 ± 7 |
Data are mean ± SD; ∗P < 0.05 versus mild OSAS (Student's t-test); BMI: body mass index; AHI: apnea/hypopnea index; ODI: oxygen desaturation index; ESS: Epworth sleepiness scale; SpO2: blood oxygen saturation; BP: blood pressure.