Table 3.
Relative odds [OR (95% CI)] of AMI among cases and controls.
| Stratification factor | Area PM2.5 | Local PM2.5 | Total PM2.5 | |||
|---|---|---|---|---|---|---|
| AMI order | ||||||
| First AMI | 1.19 | (1.06, 1.33) | 1.04 | (1.00, 1.09) | 1.05 | (1.00, 1.11) |
| Any AMI | 1.16 | (1.04, 1.29) | 1.03 | (0.97, 1.10) | 1.04 | (0.97, 1.11) |
| Study section | ||||||
| 1 | 1.24 | (1.04, 1.48) | 1.01 | (0.96, 1.06) | 1.01 | (0.95, 1.07) |
| 2 | 1.18 | (1.04, 1.35) | 1.06 | (0.98, 1.14) | 1.06 | (0.98, 1.13) |
| 3 | 1.06 | (0.83, 1.34) | 1.11 | (0.99, 1.24) | 1.10 | (0.99, 1.23) |
| Study period | ||||||
| 1995, 1997, 1999 | 1.10 | (0.98, 1.24) | 1.03 | (0.98, 1.08) | 1.03 | (0.98, 1.09) |
| 2001, 2003 | 1.18 | (1.05, 1.32) | 1.00 | (0.96, 1.03) | 1.00 | (0.96, 1.05) |
| OR per IQR of pollutant; the IQR was 0.59 μg/m3 for area PM2.5, 1.08 μg/m3 for local PM2.5, and 1.05 μg/m3 for total PM2.5. GEE models were used with exchangeable correlation within census block group; adjusted for matching factors (age, sex, and study area section), interaction terms of matching factors, population density, SES, distance to large supermarket, and distance to recreation area. | ||||||