0 years | 1–10 years | ⩾10 years | |
---|---|---|---|
Men/women | 75/100 | 12/1 | 8/9 |
Mean (SD) age (years) | 46 (18) | 42 (18) | 62 (16) |
FEV1 (% predicted) | 89 (95% CI 85 to 93)** | 87 (95% CI 73 to 101)3-150 | 59 (95% CI 43 to 76) |
VC (% predicted) | 90 (95% CI 87 to 93)** | 90 (95% CI 78 to 102)3-150 | 70 (95% CI 60 to 81) |
↵3-150 p<0.05; **p<0.01compared with the ⩾10 year employment duration subgroup, covariance analysis with age correction.9