Table 3 Spirometry pre- and post-bronchodilator and severity of COPD according to BODE index and degree of severity of the group A

Spirometry

Prebronchodilator

Postbronchodilator

P value

FEV1%

48.76± 19.42

55.3± 20.2

< 0.001*

FVC%

72.33± 20.49

78.61± 20.36

< 0.001*

FEV1/FVC ratio

52.41± 10.89

55.09± 10.66

0.002*

Severity of COPD

BODE index

5.5 (3—6.5)

Degree of severity

1

5 (13.89%)

2

17 (47.22%)

3

10 (27.78%)

4

4 (11.11%)