Table 1 Characteristics of COPD patients and health

Subjects (n)

21

11

Males (n)

20

9

Females (n)

1

2

Mean age (years)

66.19 ± 8.43

63.55 ± 6.58

Duration of disease (years)

12.95 ± 9.17

-

Smoking history (pack-years)

36.45 ± 20.18

-

Mean FEV1(L)

1.16 ± 0.38

2.45 ± 0.69

Mean FEV1%, predicted

45.62 ± 12.06

103.82 ± 17.05

Post-FEV1%, > 80% (n)

0

11

Post-FEV1% 50%-80% (n)

8

0

Post-FEV1% 30%-50% (n)

13

0

Mean FVC (L)

3.19 ± 0.86

3.21 ± 0.83

Mean FEV1/FVC(%)

36.76 ± 9.27

76.18 ± 4.47

Mean reversibility (%)

14.05 ± 13.33

-

Mean reversibility (L)

0.15 ± 0.13

-