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Table 1 The patient characteristics and baseline lung function parameters for the 39 subjects in this study

From: The relationship between inspiratory lung function parameters and airway hyper-responsiveness in subjects with mild to moderate COPD

Male/Female ratio, numbers (percentage)

12/27 (31%/69%)

Age, years

66 ± 7

Smoker, (ex-/current)$

13/26 (33%/67%)

GOLD stage 1 patients, number

10

GOLD stage 2 patients, number

29

FEV1, L/s (pre-bronchoconstriction)

1.89 ± 0.46

FVC, L (pre-bronchoconstriction)

3.11 ± 0.72

FEV1/FVC (%, pre-bronchoconstriction)

61.1 ± 8.1

FEV1 (% predicted)

67.0 ± 11.1

FEV1, L/s (post-bronchoconstriction)

1.67 ± 0.49

FVC, L (post-bronchoconstriction)

2.83 ± 0.73

FIV1, L/s

2.92 ± 0.75

IC, L

2.32 ± 0.53

FIF50, L/s

4.97 ± 1.40

PIF, L/s

5.40 ± 1.48

PD20, mg

0.13 (0.04 to >2.60#)