Table 2.
Sensitivity and specificity of ODI-2% for the diagnosis of moderate-severe and severe OSA
| BMI | Moderate-Severe OSA (AHI ≥ 15) |
Severe OSA (AHI ≥ 30) |
|||||
|---|---|---|---|---|---|---|---|
| ODI-2% ≥ 10 | ODI-2% ≥ 15 | ODI-2% ≥ 20 | ODI-2% ≥ 10 | ODI-2% ≥ 20 | ODI-2% ≥ 30 | ||
| 20-25 | Sens | 80.3 | 70.2 | 61.7 | 92.8 | 86.7 | 70.0 |
| Spec | 61.8 | 71.9 | 79.8 | 52.9 | 73.0 | 84.8 | |
| 25-30 | Sens | 85.6 | 78.3 | 69.1 | 91.3 | 84.6 | 71.4 |
| Spec | 53.4 | 63.6 | 70.6 | 39.6 | 60.3 | 75.9 | |
| 30-35 | Sens | 87.2 | 82.0 | 75.2 | 91.1 | 87.1 | 77.9 |
| Spec | 54.6 | 63.6 | 70.2 | 38.1 | 58.1 | 71.6 | |
| 35-40 | Sens | 87.9 | 83.3 | 78.4 | 89.1 | 85.9 | 79.1 |
| Spec | 50.8 | 59.5 | 65.7 | 33.8 | 53.1 | 67.4 | |
| ALL | Sens | 86.3 | 80.5 | 73.7 | 90.3 | 86.1 | 77.2 |
| Spec | 55.3 | 65.3 | 72.2 | 40.6 | 61.0 | 74.8 | |
ODI, oxygen desaturation index; OSA, obstructive sleep apnea; BMI, body mass index; AHI, apnea-hypopnea index.