Table 3 Multiple linear regression model with log-FE_NO as the dependent variable in relation to age, height, gender, smoking status and spirometry among 39 healthy subjects.

Constant

-2.13

0.641

-3.32

0.001

-3.394

-0.867

Age (year)

0.00003

0.002

-0.02

0.987

-0.003

0.003

Height (cm)

0.011

0.003

3.71

<0.001

0.005

0.017

Gender: Men vs. Women

-0.098

0.046

-2.14

0.034

-0.188

-0.008

Smoker vs. Non-smoker

-0.227

0.033

-6.94

<0.001

-0.292

-0.163

FEV ₁ /FVC (% predicted)

0.017

0.002

7.40

<0.001

0.013

0.022