Table 3.
Total incidence of influenza attributable to ozone (%) and PM2.5 (%) and 95% confidence intervals, calculated backwards (B-AF) and forwards (F-AF)
| PM2.5 | Ozone | |||
|---|---|---|---|---|
| B-AF(%) | F-AF(%) | B-AF(%) | F-AF(%) | |
| Overall | 22.85(13.88,30.80) | 22.41(13.81,30.00) | 23.40(10.29,33.52) | 22.56(10.11,32.50) |
| Low | 22.27(13.07,30.16) | 21.85(12.94,29.79) | 21.92(9.60,32.04) | 21.11(9.42,31.05) |
| High | 0.64(0.01,1.19) | 0.56(-0.03,1.04) | 1.49(0.29,2.51) | 1.44(0.23,2.40) |
| Extremely low | 0.20(0.00,0.40) | 0.20(0.00,0.36) | 1.39(0.74,1.99) | 1.18(0.69,1.53) |
| Slightly low | 22.15(12.93,30.18) | 21.70(12.97,29.41) | 21.15(8.95,31.26) | 20.24(8.93,29.65) |
| Slightly high | 0.22(-0.11,0.54) | 0.21(-0.13,0.52) | 1.21(0.18,2.13) | 1.19(0.18,2.04) |
| Extreme high | 0.43(0.11,0.70) | 0.36(0.10,0.54) | 0.31(0.09,0.52) | 0.25(0.08,0.36) |