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Table 1 Demographic and physiologic data of the study cohort

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

Parameters

OSA

non-OSA

Sex

  

Male

108

15

Female

12

9

Age (years)

45.0 ± 12.9

39.3 ± 15.7

Neck circumference (cm)

41.9 ± 3.7

37.4 ± 3.7

BMI (kg/m2)

27.7, 4.8

24.9 ± 4.9

AHI

52.9 ± 27.0

2.4 ± 0.9

CT90 (%)

17.0, 38.0

0.1, 0.3

AHT (%)

40.2 ± 21.7

2.0, 1.7

MAD (s)

27.5 ± 7.5

26.5, 9.1

HAD (s)

1446.7 ± 781.0

72.7, 58.5

HCO3− (mmol/L)

25.6 ± 1.3

24.0 ± 1.4

PaCO2 (mmHg)

40.6 ± 3.7

38.0 ± 3.5

LSaO2 (%)

73.2 ± 13.0

90.0, 3.8

MSaO2 (%)

94.1, 3.0

97.0 ± 1.1

SBQ

5.0, 1.0

3.0, 3.0

ESS

13.8 ± 4.9

9.1 ± 5.2

Berlin Questionnaire

  

Positive

95

15

Negative

25

9

  1. BMI = body mass index, AHI = apnea hypopnea index, CT90% = percentage of total sleep time when blood oxygen is less than 90%, AHT% = duration of apnea hypopnea in total sleep time, MAD = mean apnea–hypopnea duration, HAD = duration of apnea hypopnea per hour, LSaO2 = lowest blood oxygen saturation, MSaO2 = mean blood oxygen saturation, SBQ = STOP-Bang questionnaire, ESS = Epworth Sleepiness Scale
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BMC Pulmonary Medicine

ISSN: 1471-2466

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