Table 4.
Predictive parameters for BQ
| AHI ≥ 5 – <15 (95% CI) | AHI ≥ 15 – ≤ 30 (95% CI) | AHI > 30 (95% CI) | |
|---|---|---|---|
|
Sensitivity, % |
76 (67–73) |
84 (76–91) |
79 (69–86) |
|
Specificity, % |
40 (12–74) |
61 (41–79) |
39 (22–58) |
|
PPV, % |
94 (86–96) |
86 (80–94) |
80(71–87) |
|
NPV, % |
12 (3.5–28.2) |
52 (34–69) |
36 (20–55) |
|
Positive LR |
1.26 (0.6–27) |
2.14 (1.6–2.9) |
1.28 (0.8–2.0) |
|
Negative LR |
0.61 (0.3–1.1) |
0.26 (0.1–0.5) |
0.55 (0.3–0.9) |
|
Odds ratio |
2.069 (0.54–7.8) |
8.21 (3.2–20.8) |
2.31 (0.97–5.5) |
| AUC | 0.578 (0.488–0.665) | 0.724 (0.639–0.799)* | 0.586 (0.496–0.672) |
AHI: apnoea/hypopnoea index; AUC: area under the curve; BQ: Berlin Questionnaire; LR: likelihood ratio; NPV: negative predictive value; PPV: positive predictive value.