Characteristics

Cases
(n=35)

Controls
(n=16)

p Value

Age (years)

57.4 ± 13.1

44.6 ± 16.8

0.005

Male (%)

11 (31.4)

5 (31.3)

0.990

Smokers

22 (62.9)

5 (31.3)

0.036

FVC (L)

2.80 ± 0.93

3.51 ± 0.81

0.012

FEV1 (L)

1.74 ± 0.83

3.01 ± 0.71

<0.0001

 

COPD cases

Controls

p Value

MVAIT (s)

21.6 ± 12.6

31.5 ± 15.7

0.049

MVAET (s)

16.5 ± 6.0

22.1 ± 7.9

0.030

 

Asthma cases

Controls

p Value

MVAIT (s)

22.9 ± 11.3

31.5 ± 15.7

0.076

MVAET (s)

17.2 ± 7.2

22.1 ± 7.9

0.069

Data are presented as mean ± SD or n (%). FEV1: forced expiratory volume in one
second. FVC: forced vital capacity. MVAIT: maximal voluntary apnea inspiratory
time. MVAET: maximal voluntary expiratory time.
Table 1: Characteristics of study patients.