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Table 3 Values of SBQ ≥ 3 points combined with an HCO3− concentration ≥ 24.6 mmol/L for screening for OSA (%)

From: Effect of arterial blood bicarbonate (HCO3−) concentration on the accuracy of STOP-Bang questionnaire screening for obstructive sleep apnea

Cutoff value

AHI ≥ 5

AHI ≥ 15

AHI ≥ 30

SBQ ≥ 3 points

   

 Sensitivity

97.5

98.1

98.9

 Specificity

25.0

17.1

15.1

SBQ ≥ 3 points + HCO3−≥24.6 mmol/L

   

 Sensitivity

79.2*

84.5*

86.8*

 Specificity

75.1*

65.9*

58.5*

  1. AHI = apnea hypopnea index, SBQ = STOP-Bang questionnaire
  2. Annotation: *Compared with the SBQ score ≥ 3 group, P < 0.01
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BMC Pulmonary Medicine

ISSN: 1471-2466

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