Table 4

Effect of averaged regional pollutants on lung function level

Regional pollutant% difference†95% CI
 O3 (10:00–18:00)−3.10(−5.24 to −0.91)**
 PM2.5−2.94(−4.65 to −1.20)***
 PM10−2.19(−3.98 to −0.37)*
 NO2−1.19(−4.14 to 1.85)
 O3 (10:00–18:00)−0.31(−3.11 to 2.57)
 PM2.5−2.25(−3.94 to −0.52)*
 PM10−2.05(−3.54 to −0.54)**
 NO2−0.79(−3.52 to 2.02)
  • †See footnote to table 2 for adjustment variables (community adjustment not included). Each pollutant was scaled to the range of the 24 h average over the study period from 2002 until 2007 with the exception of O3, which was scaled to the 8 h average from 10:00 to 18:00 (22.7 ppb for O3 13.3 µg/m3 for PM2.5, 30.3 µg/m3 for PM10, 19.4 µg/m3 for NO2).

  • *p<0.05, **p<0.01, ***p<0.005.

  • FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity, NO2, nitrogen dioxide; O3, ozone; PM10 and PM2.5, particulate matter with aerodynamic diameter <10 µm and 2.5 µm.