Table 5.
Air pollution profiles and effect estimates for air pollution on onset of myocardial infarction. A comparison of four studies.
| Pollutant | City | 1-hour mean | 1-hour IQR | 1-hour 5–95% | Averaging time | Adjusted OR (95% CI)† |
|---|---|---|---|---|---|---|
| PM2.5 | Boston | 12.1 | 27.0 | 2-hour | 1.17 (1.04, 1.32) | |
| Seattle | 12.8 | 10.6 | 2-hour | 1.01 (0.97, 1.05) | ||
| Augsburg | 16.3 | 9.1 | 1-hour | 0.98 (0.87, 1.11) | ||
| PM10 | Boston | 19.4 | 39.2 | 2-hour | 1.11 (1.01, 1.21) | |
| Seattle | 28.3 | 20.5 | ||||
| Augsburg | Same day* | 1.02 (0.97, 1.06) | ||||
| Stockholm | 18.2 | 12.7 | 37.5 | 2-hour | 0.94 (0.84, 1.07) | |
| CO | Boston | 1.3 | 2.1 | 2-hour | 1.02 (0.99, 1.05) | |
| Seattle | 2.3 | 1.6 | 2-hour | 1.00 (1.00, 1.01) | ||
| Augsburg | 0.5 | 0.4 | Same day | 1.00 (0.97, 1.03) | ||
| Stockholm | 0.5 | 0.3 | 0.9 | 2-hour | 0.98 (0.95, 1.02) | |
| NO2 | Boston | 43.2 | 75.2 | 2-hour | 1.01 (0.96, 1.06) | |
| Augsburg | 35.8 | 20.0 | Same day | 1.03 (0.97, 1.10) | ||
| Stockholm | 24.4 | 19.1 | 46.9 | 2-hour | 0.98 (0.91, 1.06) | |
| O3 | Boston | 38.8 | 88.2 | 2-hour | 1.03 (0.98, 1.08) | |
| Augsburg | 43.5 | 48.5 | Same day | 1.00 (0.95, 1.05) | ||
| Stockholm | 56.1 | 30.7 | 74.8 | 2-hour | 1.01 (0.95, 1.07) |
*
From February 1999 to December 1999, PM10 was estimated from total suspended particles (TSP) by multiplying the TSP measurement by a factor of 0.83.
†
Boston adjusted for season, meteorology and day of week, Seattle and Stockholm adjusted for relative humidity and temperature, Augsburg did not specify for case-crossover analyses. All effect estimates are expressed per 10 μg/m3 increment except for CO which are expressed per 0.1mg/m3 increment.