Table 3

Adjusted RRs of hospital admission for respiratory diseases in children <5 and <1 year old (RRs are for an increase from the 10th to the 90th percentile in daily concentrations of each pollutant)

All respiratory Pneumonia Pneumonia <1 Asthma
PM10 1.040 (0.985–1.099)1.050 (0.984–1.121)1.094 (1.013–1.180)1.0523-151 (0.923–1.198)
SO2 1.0383-150 (0.983–1.096)1.0243-150(0.961–1.091)1.071 (0.998–1.149)1.1063-151 (0.981–1.247)
NO2 1.063 (0.999–1.132)1.093 (1.016–1.177)1.091 (0.996–1.193)1.1073-151 (0.940–1.300)
O3 1.054 (1.003–1.107)1.076 (1.014–1.142)1.070 (0.993–1.152)1.0113-151 (0.899–1.136)
CO1.017 (0.971–1.065)1.015 (0.961–1.071)1.0353-151(0.975–1.099)1.081 (0.980–1.192)
  • 3-150 lag=1 day;

  • 3-151 lag=2 day.

  • 10th to 90th percentiles were: PM10=98.1 μg/m3, SO2=27.1 μg/m3, NO2=319.4 μg/m3, O3=119.6 μg/m3, CO=6.9 ppm.