Table 1.
Demographic Data and Overnight Polysomnography Findings in Different Groups of OSA Patients
| Total | AHI ≤ 5 | 5<AHI≤ 15 | 15<AHI≤ 30 | AHI >30 | p-value | ||
|---|---|---|---|---|---|---|---|
| N (Female) | 58 (25) | 3 (2) | 12 (6) | 19 (8) | 24 (9) | 0.747 | |
| Demographic | Age (yrs) | 54.7±13.5 | 32.3±16.4** | 55.5±13.4 | 53.1±10.4 | 58.5±13.2 | 0.012* |
| BMI (kg/m2) | 30.5±7.1 | 37.5±7.8 | 26.7±4.2 | 28.9±6.4 | 32.9±7.5 | 0.008* | |
| Weight (kg) | 195.1±51.3 | 237.5±62.4 | 168.4±30.4 | 183.8±44.1 | 212.0±56.6 | 0.018* | |
| Height (cm) | 169.8±9.7 | 168.9±5.8 | 169.1±7.4 | 169.6±8.1 | 170.5±12.2 | 0.977 | |
| History or CVD (Female) | 16 | 0 | 2 (0) | 6 (2) | 8 (3) | _ | |
| Sleep Structure | AHI (events/hr) | 33.2±25.7 | 4.2±1.0** | 9.4±3.4** | 21.9±4.2** | 57.7±21.9** | <0.0001* |
| Sleep efficiency (%) | 77.4±15.7 | 83.0±7.4 | 77.7±12.7 | 76.8±17.0 | 77.2±17.2 | 0.955 | |
| Mean SaO2 (%) | 93.8±2.7 | 94.9±1.0 | 94.7±2.4 | 94.7±1.7 | 92.5±3.2 | 0.032 * | |
| Minimum SaO2 (%) | 81.9±8.1 | 86.7±6.8 | 87.7±5.6 | 83.5±4.7 | 77.2±8.9 | <0.001* | |
| Arousal Index (events/hr) | 35.5±23.4 | 12.7±3.4 | 19.2±4.8 | 26.4±11.8 | 53.7±24.7** | <0.0001* | |
Notes: Data are presented as mean ± standard deviation. Bold text indicates significant changes; *indicate statistically significant changes between groups. **indicate statistically significant changes of that group with all other groups.
Abbreviations: N, Number; BMI, Body Mass Index; AHI, Apnea Hypopnea Index; CVD, Cardiovascular disease.