Table 4.
Sensitivity and specificity of ODI-4% for the diagnosis of moderate-severe and severe OSA
| BMI | Moderate-Severe OSA (AHI ≥ 15) |
Severe OSA (AHI ≥ 30) |
|||||
|---|---|---|---|---|---|---|---|
| ODI-4% ≥ 10 | ODI-4% ≥ 15 | ODI-4% ≥ 20 | ODI-4% ≥ 10 | ODI-4% ≥ 20 | ODI-4% ≥ 30 | ||
| 20-25 | Sens | 31.9 | 21.6 | 17.8 | 60.0 | 43.3 | 26.1 |
| Spec | 98.6 | 99.4 | 99.6 | 95.1 | 99.2 | 99.6 | |
| 25-30 | Sens | 41.9 | 29.3 | 20.5 | 63.3 | 39.0 | 24.8 |
| Spec | 95.9 | 98.4 | 98.9 | 88.7 | 98.2 | 99.5 | |
| 30-35 | Sens | 55.5 | 44.5 | 35.5 | 72.7 | 54.1 | 36.9 |
| Spec | 94.0 | 98.2 | 99.4 | 83.8 | 97.0 | 99.3 | |
| 35-40 | Sens | 62.9 | 52.2 | 43.7 | 75.2 | 58.7 | 42.9 |
| Spec | 93.8 | 97.6 | 98.9 | 80.6 | 95.3 | 99.0 | |
| ALL | Sens | 53.7 | 42.6 | 34.4 | 71.8 | 53.7 | 38.6 |
| Spec | 95.6 | 98.3 | 99.1 | 86.6 | 97.4 | 99.4 | |
ODI, oxygen desaturation index; OSA, obstructive sleep apnea; BMI, body mass index; AHI, apnea-hypopnea index.