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Table 4 Sensitivity, specificity and positive predictive value for various STOP-BANG thresholds to predict an apnea-hypopnea index (AHI) ≥5 by unattended portable monitoring sleep study for BMI ≥30 and BMI < 30

From: STOP-BANG questionnaire as a screening tool for diagnosis of obstructive sleep apnea by unattended portable monitoring sleep study

STOP-BANG score ≥

Sensitivity

Specificity

BMI < 30 (n = 149)

BMI ≥ 30 (n = 353)

BMI < 30 (n = 149)

BMI ≥ 30 (n =353)

1

100.0

100.0

0.0

0.0

2

100.0

99.2

0.0

0.0

3

100.0

95.8

0.0

0.0

4

97.8

84.2

16.1

10.0

5

87.6

60.8

35.5

20.0

6

69.3

29.2

67.7

100.0

7

44.1

11.7

96.8

100.0

8

18.6

4.2

100.0

100.0