Variable | FEV1 (ml/s) | FVC (ml) | FEV1/FVC (%) | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Model 1 | Model 2 | Model 1 | Model 2 | Model 1 | Model 2 | ||||||||||||||
β | SE | P | β | SE | P | β | SE | P | β | SE | P | β | SE | P | β | SE | P | ||
Intercept | − 1263 | 172.2 |  < 0.001 | − 1400.4 | 103.1 |  < 0.001 | − 2269.7 | 178.7 |  < 0.001 | − 2100.1 | 114.8 |  < 0.001 | 107.63 | 2.2 |  < 0.001 | 17.33 | 1.5 |  < 0.001 | |
Age (yr) | − 22.85 | 1.6 |  < 0.001 | − 7.76 | 1.0 |  < 0.001 | − 21.38 | 1.7 |  < 0.001 | − 9.19 | 1.1 |  < 0.001 | − 0.10 | 0.02 |  < 0.001 | − 0.01 | 0.001 | 0.400 | |
Current smoker | 15.37 | 10.3 | 0.135 | − 3.13 | 7.3 | 0.668 | 18.87 | 11.3 | 0.095 | 2.15 | 8.2 | 0.794 | − 0.07 | 0.1 | 0.611 | − 0.11 | 0.1 | 0.251 | |
Packyears (py) | − 2.02 | 0.7 | 0.004 | − 0.77 | 0.5 | 0.100 | − 1.87 | 0.8 | 0.013 | − 0.9 | 0.5 | 0.086 | − 0.01 | 0.01 | 0.117 | − 0.004 | 0.006 | 0.436 | |
BMI (kg/m2) | − 10.52 | 1.5 |  < 0.001 | − 0.62 | 0.9 | 0.473 | − 10.85 | 1.5 |  < 0.001 | − 2.88 | 1.0 | 0.003 | − 0.02 | 0.01 | 0.233 | 0.03 | 0.01 | 0.002 | |
Height (cm) | 35.89 | 1.0 |  < 0.001 | 13.95 | 0.6 |  < 0.001 | 43.82 | 1.0 |  < 0.001 | 19.74 | 0.7 |  < 0.001 | − 0.08 | 0.01 |  < 0.001 | − 0.04 | 0.007 |  < 0.001 | |
TIC (yr) | − 50.78 | 0.8 |  < 0.001 | 199.38 | 5.6 |  < 0.001 | − 34.36 | 1.0 |  < 0.001 | 259.77 | 6.5 |  < 0.001 | − 0.49 | 0.01 |  < 0.001 | 5.98 | 0.2 |  < 0.001 | |
Spirometrybase (ml) |  |  |  | 0.80 | 0.007 |  < 0.001 |  |  |  | 0.77 | 0.007 |  < 0.001 |  |  |  | 0.87 | 0.008 |  < 0.001 | |
Spirometrybase (ml) * TIC |  |  |  | − 0.06 | 0.001 |  < 0.001 |  |  |  | − 0.07 | 0.001 |  < 0.001 |  |  |  | − 0.07 | 0.002 |  < 0.001 | |
TWEI | − 21.76 | 7.3 | 0.003 | − 22.04 | 5.4 |  < 0.001 | − 28.71 | 7.6 |  < 0.001 | − 20.53 | 6.1 |  < 0.001 | 0.07 | 0.1 | 0.415 | − 0.14 | 0.1 | 0.044 | |
TWEI * TIC |  |  |  | 2.00 | 1.0 | 0.052 |  |  |  | 3.78 | 1.2 | 0.002 |  |  |  | − 0.03 | 0.01 | 0.031 | |
Years of dust exposure (yr) | − 1.31 | 1.5 | 0.383 | 3.12 | 0.9 |  < 0.001 | − 2.22 | 1.6 | 0.155 | 4.27 | 1.0 |  < 0.001 | 0.02 | 0.02 | 0.252 | − 0.002 | 0.01 | 0.890 | |
Years of dust exposure * TIC |  |  |  | − 1.43 | 0.1 |  < 0.001 |  |  |  | − 1.79 | 0.1 |  < 0.001 |  |  | − 0.002 | 0.001 | 0.044 |  |