Table 6 Longitudinal association* between air pollution exposures and parameters of forced lung function (n = 543)
| Â | FVC | FEV1 | FEV1/FVC | ||||||
|---|---|---|---|---|---|---|---|---|---|
β (%) | 95% CI | P-value | β (%) | 95% CI | P-value | β (%) | 95% CI | P-value | |
Model 1: PM2.5 | |||||||||
 Cross-sectional | 0.7 | − 2.56 to 4.06 | 0.647 | − 0.06 | − 3.61 to 3.62 | 0.971 | − 0.85 | − 2.9 to 1.26 | 0.418 |
 On rate of yearly change | 0.18 | − 0.78 to 1.16 | 0.712 | − 0.43 | − 1.32 to 0.47 | 0.347 | − 0.82 | − 1.38 to − 0.26 | 0.004 |
Model 2: NO2 | |||||||||
 Cross-sectional | 3.73 | 1.35 to 6.17 | 0.002 | 2.5 | 0.28 to 4.77 | 0.027 | − 1.68 | − 2.95 to − 0.39 | 0.011 |
 On rate of yearly change | 0.1 | − 0.46 to 0.65 | 0.733 | 0.01 | − 0.5 to 0.53 | 0.9627 | − 0.1 | − 0.42 to 0.22 | 0.5374 |
Model 3: PM2.5 + NO2 | |||||||||
 PM2.5 | |||||||||
  Cross-sectional | − 0.11 | − 3.87 to 3.79 | 0.951 | 0.15 | − 3.99 to 4.48 | 0.940 | 0.15 | − 2.32 to 2.67 | 0.907 |
  On rate of yearly change | 0.27 | -0.82 to 1.37 | 0.626 | − 0.38 | − 1.39 to 0.63 | 0.457 | − 0.86 | − 1.49 to − 0.23 | 0.008 |
 NO2 | |||||||||
  Cross-sectional | 0.68 | − 3.13 to 4.64 | 0.730 | − 0.68 | − 4.19 to 2.95 | 0.708 | − 1.47 | − 3.57 to 0.68 | 0.179 |
  On rate of yearly change | − 0.09 | − 0.72 to 0.54 | 0.776 | 0.01 | − 0.58 to 0.6 | 0.980 | 0.12 | − 0.25 to 0.48 | 0.535 |