Table 6 Correlations between AHI index and certain studied parameters within each group

Age

0.16

0.45

−  0.07

0.6

BMI

0.19

0.368

0.5

< 0.001**

FEV1

−  0.71

< 0.001**

−  0.73

< 0.001**

SI

0.66

< 0.001**

0.75

< 0.001**

SBQ

0.44

0.03*

0.51

< 0.001**

ESS

0.75

< 0.001**

0.73

< 0.001**

mMRC

0.5

0.011*

0.57

< 0.001**

ODI

0.69

< 0.001**

0.86

< 0.001**

NC

0.54

0.006*

0.34

0.003*