Lung function | All | Non-COPD | COPD GOLD 1 | COPD GOLD 2 | Statistics | |
---|---|---|---|---|---|---|
(N = 227) | (n = 184) | (n = 24) | (n = 19) | |||
COPD-6™ | FEV1 (% predicted) | 94.3 ± 15.6 | 97.6 ± 13.3 | 90.9 ± 13.0 | 67.5 ± 12.2 | F = 46.27 P < 0.001 |
FEV6 (% predicted) | 93.9 ± 16.2 | 96.0 ± 15.3 | 94.7 ± 14.9 | 74.5 ± 13.7 | F = 17.27 P < 0.001 | |
FEV1/FEV6 (%) | 0.845 ± 0.085 | 0.864 ± 0.071 | 0.781 ± 0.083 | 0.757 ± 0.117 | F = 25.84 P < 0.001 | |
Lung age (yrs) | 60.7 ± 13.9 | 57.7 ± 11.1 | 64.0 ± 11.1 | 84.6 ± 15.7 | F = 48.07 P < 0.001 | |
Spirometry | FEV1 (% predicted) | 97.9 ± 15.3 | 101.5 ± 12.9 | 92.9 ± 10.2 | 71.1 ± 12.7 | F = 51.50 P < 0.001 |
FVC (% predicted) | 109.3 ± 17.0 | 110.8 ± 16.7 | 112.7 ± 11.8 | 91.1 ± 16.2 | F = 13.29 P < 0.001 | |
FEV1/FVC (%) | 0.742 ± 0.073 | 0.761 ± 0.060 | 0.665 ± 0.055 | 0.650 ± 0.073 | F = 49.14 P < 0.001 | |
ΔFEV1 (%) | 1.39 ± 4.00 | 1.40 ± 3.79 | 2.92 ± 4.25 | −0.93 ± 7.68 | F = 3.011 P = 0.051 |