Table 5

Results of two pollutant models examining the effect of pollen on estimates of individual pollutant effects. Analysis is confined to the warm season, and to pollutants which were significant in the unipollutant models (see table 2)

Age (years)Pollutant (lag)Single pollutant effectBirchGrassOak
0–1424 h SO2 (1)3.33** 3.17 (0.92,5.47)** 3.30 (1.05,5.59)** 3.34 (1.0,5.63)**
15–648 h O3 (1)4.25*** 4.30 (1.88,6.78)*** 4.28 (1.86,6.76)*** 4.16 (1.74,6.64)***
24 h SO2 (2)−1.39−1.62 (−4.21,1.04)−1.36 (−3.96,1.30)−1.34 (−3.93,1.32)
All ages8 h O3 (1)2.21** 2.23 (0.64,3.83)** 2.24 (0.66,3.85)** 2.22 (0.64,3.83)**
24 h SO2(1)2.02* 1.82 (0.02,3.65)* 2.10 (0.30,3.93)* 2.01 (0.22,3.84)*