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Table 4 Predictive parameters for BQ

From: Translation and validation of Berlin questionnaire in primary health care in Greece

 

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)

  1. AHI: apnoea/hypopnoea index; AUC: area under the curve; BQ: Berlin Questionnaire; LR: likelihood ratio; NPV: negative predictive value; PPV: positive predictive value.