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The Egyptian Journal of Bronchology

Table 8 Multiple regression analysis of age BMI, post FEV1, smoking index, baseline O2% and neck circumference as an independent variable for AHI

From: Prevalence of obstructive sleep apnea among patients with chronic obstructive pulmonary disease

Ā 

Unstandardized coefficients

Standardized coefficients

t

Sig.

95.0% confidence interval for Ī²

Ī’

SE

Ī²

Lower bound

Upper bound

BMI

āˆ’ 0.44

0.19

āˆ’ 0.15

āˆ’ 2.38

0.02

āˆ’ 0.81

āˆ’ā€‰ 0.07

FEV1

āˆ’ 0.55

0.22

āˆ’ 0.33

āˆ’ 2.48

0.02

āˆ’ 0.99

āˆ’ā€‰ 0.11

SI

0.2

0.09

0.26

2.13

0.04

0.013

0.38

ODI

āˆ’ 2.34

0.47

āˆ’ 0.36

āˆ’ 4.99

<ā€‰0.001

āˆ’ 3.28

āˆ’ 1.41

NC

1.75

0.92

0.12

1.89

0.06

āˆ’ 0.09

3.58

PHT

0.16

0.20

0.049

0.78

0.44

āˆ’ 0.25

0.56

(Constant)

224.75

  1. Ī² regression coefficient, SE standard error pā€‰<ā€‰0.05 is significant
  2. Dependent variable: AHI index, AHI apnea hypopnea index, BMI body mass index, FEV1 forced expiratory volume in the 1st second, SI smoking index, ODI oxygen desaturation index, NC neck circumference, PHT pulmonary hypertension
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