Agent | Units | Regression coefficient | One year mean exposures | Predicted annual decrease in FEV1 (ml) for mean exposures | ||
---|---|---|---|---|---|---|
b | SE | 95% CI | ||||
*Three TBM workers and one engineer, one foreman, and one outdoor worker were excluded from the final analyses. | ||||||
†Cumulative exposure adjusted for sick leave. | ||||||
Non-smokers | ||||||
Total dust | mg⋅y/m3 | −4.0 | 1.3 | −6.5 to −1.4 | 1.7 | −6.6 |
Respirable dust | mg⋅y/m3 | −16 | 4.5 | −24 to −6.8 | 0.48 | −7.7 |
α-quartz | mg⋅y/m3 | −610 | 150 | −890 to 320 | 0.016 | −10 |
VOC | mg⋅y/m3 | −2.0 | 0.99 | −3.9 to −0.005 | 1.9 | −3.8 |
Oil mist | mg⋅y/m3 | −57 | 18 | −93 to −21 | 0.17 | −9.7 |
Oil vapour | mg⋅y/m3 | −1.9 | 1.6 | −5.0 to 1.2 | 2.1 | −4.0 |
Formaldehyde | ppm⋅y | −1200 | 340 | −1900 to −520 | 0.008 | −9.6 |
Nitrogen dioxide | ppm⋅y | −39 | 9.0 | −57 to −21 | 0.21 | −8.2 |
Carbon monoxide | ppm⋅y | −2.3 | 0.70 | −3.7 to 0.91 | 2.7 | −6.1 |
Ever smokers | ||||||
Total dust | mg⋅y/m3 | −2.0 | 1.1 | −4.2 to 0.23 | 2.2 | −4.3 |
Respirable dust | mg⋅y/m3 | −9.3 | 4.0 | −17 to −1.5 | 0.63 | −5.9 |
α-quartz | mg⋅y/m3 | −590 | 130 | −840 to −340 | 0.02 | −12 |
VOC | mg⋅y/m3 | −0.80 | 0.84 | −2.5 to 0.86 | 2.4 | −1.9 |
Oil mist | mg⋅y/m3 | −75 | 17 | −110 to −41 | 0.23 | −17 |
Oil vapour | mg⋅y/m3 | −7.4 | 1.6 | −11 to −4.1 | 2.7 | −20 |
Formaldehyde | ppm⋅y | −1600 | 330 | −2200 to −970 | 0.01 | −16 |
Nitrogen dioxide | ppm⋅y | −38 | 8.2 | −54 to −22 | 0.32 | −12 |
Carbon monoxide | ppm⋅y | −3.3 | 0.67 | −4.6 to −2.0 | 3.6 | −12 |