- Baseline characteristics of the 4 groups.
| Characteristics | Non-OSAHS | Mild OSAHS | Moderate OSAHS | Severe OSAHS | χ2/F | P-values |
|---|---|---|---|---|---|---|
| Number | 36 | 19 | 22 | 57 | ||
| Males | 29 (80.6) | 17 (89.5) | 18 (81.9) | 53 (93.0) | 3.818 | 0.282 |
| Age (year) | 42.8±6.0 | 43.5±9.8 | 46.3±8.25 | 41.9±11.7 | 4.014 | 0.260 |
| Smoking | 8 (22.2) | 2 (10.5) | 7 (31.8) | 11 (19.3) | 2.950 | 0.399 |
| Hypertension | 3 (8.3) | 0 (0.0) | 4 (18.2) | 12 (21.0) | 6.653 | 0.084 |
| Diabetes | 2 (5.55) | 1 (5.3) | 2 (9.1) | 6 (10.5) | 0.984 | 0.805 |
| BMI (Kg/m2) | 24.4±3.4 | 27.0±3.3 | 28.2±3.9 | 30.85±3.9 | 46.219 | <0.001 |
| AHI (events/h) | 2.5±1.5 | 8.6±3.4 | 23.0±4.3 | 41.5±8.1 | 119.228 | <0.001 |
| LSpO2 (%) | 92.1±1.8 | 91.0±3.0 | 78.95±7.7 | 64.0±9.6 | 141.041 | <0.001 |
| MSpO2 (%) | 94.9±1.5 | 94.3±2.2 | 89.3±2.5 | 87.5±2.1 | 95.041 | <0.001 |
| SpO2<90% (%) | 0.9±0.7 | 3.4±3.2 | 17.7±6.7 | 43.9±11.5 | 114.805 | <0.001 |
Values are presented as numbers and precentages (%) or mean ± standard deviation (SD). OSAHS: obstructive sleep apnea-hypopnea syndrome, AHI: apnea-hypopnea index, BMI: body mass index, LSpO2: lowest oxygen saturation, MSpO2: mean lowest oxygen saturation, SpO2<90%: time percentage for oxygen saturation <90%