Table 4 Relative risks of asthma HAs per 10-ppb increase in daily 8-h maximum O3 concentrations, with adjustments for pollen and respiratory infections, in Dallas, Houston, and Austin, Texas from 2003 to 2011
From: Ambient ozone and asthma hospital admissions in Texas: a time-series analysis
O3 concentrations | Model 1a | Model 2b | Model 3c | |||
|---|---|---|---|---|---|---|
Full year | October–July | Full year | October–July | Full year | October–July | |
Asthma HAs, all ages | ||||||
Same day | 1.007 (0.998–1.015) | 0.999 (0.988–1.009) | 1.005 (0.997–1.014) | 0.998 (0.987–1.008) | 1.005 (0.996–1.014) | 0.997 (0.986–1.008) |
Lag 1 day | 1.012 (1.004–1.021) | 1.011 (1.001–1.021) | 1.011 (1.003–1.020) | 1.010 (1.000–1.021) | 1.010 (1.001–1.018) | 1.008 (0.998–1.018) |
Lag 2 day | 1.011 (1.002–1.019) | 1.008 (0.998–1.018) | 1.010 (1.002–1.019) | 1.008 (0.998–1.018) | 1.008 (1.000–1.016) | 1.005 (0.995–1.015) |
Lag 0–3 days | 1.017 (1.005–1.030) | 1.011 (0.996–1.026) | 1.016 (1.004–1.028) | 1.010 (0.995–1.025) | 1.013 (1.001–1.025) | 1.006 (0.991–1.021) |
Asthma HAs, 5–14 years | ||||||
Same day | 1.027 (1.008–1.047) | 1.014 (0.991–1.039) | 1.024 (1.005–1.044) | 1.013 (0.989–1.037) | 1.023 (1.004–1.043) | 1.012 (0.988–1.037) |
Lag 1 day | 1.025 (1.007–1.043) | 1.018 (0.996–1.041) | 1.023 (1.005–1.041) | 1.018 (0.996–1.041) | 1.022 (1.004–1.040) | 1.016 (0.994–1.039) |
Lag 2 day | 1.019 (1.001–1.038) | 0.999 (0.977–1.021) | 1.018 (1.0002–1.036) | 0.999 (0.977–1.021) | 1.016 (0.998–1.034) | 0.997 (0.975–1.019) |
Lag 0–3 days | 1.037 (1.011–1.064) | 1.011 (0.978–1.045) | 1.034 (1.008–1.060) | 1.010 (0.977–1.044) | 1.031 (1.005–1.058) | 1.007 (0.974–1.041) |