Variables

Controls (A)

n = 95

Study group (B): exposure ≤ 5 years

n = 84

Study group C: exposure > 5 years

n = 11

Pre-bronchodilator FEV1 (L)

2.17 ± 0.54*

1.98 ± 2.33

1.55 ± 0.76

Pre-bronchodilator FVC (L)

2.88 ± 0.62^#

2.49 ± 0.54

2.72 ± 0.11

Pre-bronchodilator FEV1/FVC (%)

98.69 ± 4.33

92.18 ± 4.31

83.98 ± 6.73

Post-bronchodilator FEV1 (L)

2.30 ± 0.55*

2.32 ± 0.19

2.14 ± 0.47

Post-bronchodilator FVC (L)

2.97 ± 0.66*

2.98 ± 0.73

2.46 ± 0.78

Post-bronchodilator FEV1/FVC (%)

98.92 ± 2.43*

100.76 ± 4.82

83.23 ± 4.11

Pre-bronchodilator PEFR (L/min)

4.42 ± 1.26

4.01 ± 2.31

3.98 ± 6.44

Post-bronchodilator PEFR (L/min)

4.58 ± 1.37

4.21 ± 065

3.92 ± 1.22