| Table 5: Association between exposure to asphalt fumes and changes in pulmonary function test indices (multiple linear regression analysis). | |
| Dependent variable | β (95% CI) |
| VC | –3.1 (–6.9 to 0.7) |
| VC | –1.7 (–6.3 to 2.9) |
| FEV1 | –3.6 (–8.2 to 1.1) |
| PEF | –4.4 (–10.4 to 1.6) |
| FEV1/VC | –20.4 (–24.3 to –16.5) |
| FEV1/FVC | –20.3 (–23.0 to –17.6) |
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