Table 4 Longitudinal association* between air pollution exposures and parameters of lung volume for visits (n = 792) done by the participating elderly (n = 420) in this study
| Â | TLC | RV | RV/TLC | ||||||
|---|---|---|---|---|---|---|---|---|---|
β (%) | 95% CI | P-value | β (%) | 95% CI | P-value | β (%) | 95% CI | P-value | |
Model 1: PM2.5 | |||||||||
 Cross-sectional | 0.01 | − 5.05 to 5.35 | 0.996 | − 1.82 | − 9.42 to 6.41 | 0.654 | − 0.29 | − 5.12 to 4.79 | 0.910 |
 On rate of yearly change | − 2.15 | − 3.67 to − 0.6 | 0.007 | − 3.68 | − 6.4 to − 0.87 | 0.011 | − 1.54 | − 3.22 to 0.17 | 0.078 |
Model 2: NO2 | |||||||||
 Cross-sectional | − 0.09 | − 3.86 to 3.84 | 0.965 | − 2.17 | − 8.45 to 4.53 | 0.515 | − 1.46 | − 5.34 to 2.58 | 0.474 |
 On rate of yearly change | − 1.82 | − 2.76 to − 0.87 | 0.0002 | − 3.34 | − 5.03 to − 1.62 | 0.0002 | − 1.58 | − 2.62 to − 0.53 | 0.003 |
Model 3: PM2.5 + NO2 | |||||||||
 PM2.5 | |||||||||
  Cross-sectional | − 2.71 | − 8.65 to 3.62 | 0.391 | − 6.5 | − 15.3 to 3.2 | 0.181 | − 2.91 | − 8.62 to 3.16 | 0.339 |
  On rate of yearly change | − 0.46 | − 2.47 to 1.59 | 0.655 | − 0.38 | − 4.02 to 3.4 | 0.842 | 0.14 | − 2.08 to 2.41 | 0.901 |
 NO2 | |||||||||
  Cross-sectional | 1.92 | − 4.08 to 8.3 | 0.538 | 4.33 | − 6.13 to 15.96 | 0.431 | 2.42 | − 3.93 to 9.19 | 0.463 |
  On rate of yearly change | − 1.69 | − 2.94 to − 0.43 | 0.009 | − 3.32 | − 5.53 to − 1.05 | 0.004 | − 1.69 | − 3.05 to -0.3 | 0.017 |