| Two-pollutant models | OR (95% CI)a | Lag days |
---|---|---|---|
PM2.5 | —b | 1.002 (1.001, 1.004) | Lag 5 |
 | Adjusted for CO | 1.000 (0.998, 1.002) | Lag 5 |
PM10 | —b | 1.001 (1.000, 1.002) | Lag 5 |
 | Adjusted for CO | 1.000 (0.998, 1.001) | Lag 5 |
CO | —b | 1.613 (1.247, 2.089) | Lag07 |
 | Adjusted for PM2.5 | 1.924 (1.336, 2.769) | Lag07 |
 | Adjusted for PM10 | 1.877 (1.323, 2.661) | Lag07 |