Table 4. Estimated odds ratios for each 10 µg/m3 increase in PM2.5 levels in relation to AMI, STEMI, and NSTEMI for different lag days.
| Lag period | AMI OR (95% CI) | STEMI OR (95% CI) | NSTEMI OR (95% CI) | |
| PM2.5 | 0 | 1.00 (0.97 1.04) | 1.02 (0.97 1.07) | 1.00 (0.96 1.05) |
| 1 | 1.02 (0.99 1.06) | 1.05 (1.00 1.11)* | 0.99 (0.95 1.03) | |
| 2 | 1.01 (0.97 1.04) | 1.03 (0.98 1.09) | 1.01 (0.97 1.05) | |
| 3 | 0.98 (0.95 1.01) | 1.01 (0.95 1.06) | 0.97 (0.93 1.02) | |
| 4 | 1.00 (0.96 1.03) | 0.98 (0.93 1.03) | 1.00 (0.96 1.04) | |
| 5 | 0.98 (0.95 1.02) | 0.97 (0.93 1.02) | 0.98 (0.93 1.02) | |
| PM10 | 0 | 1.00 (0.95 1.05) | 1.02 (0.95 1.09) | 0.98 (0.92 1.04) |
| 1 | 0.98 (0.93 1.02) | 1.01 (0.94 1.09) | 0.97 (0.92 1.03) | |
| 2 | 1.01 (0.97 1.06) | 1.03 (0.95 1.10) | 1.00 (0.93 1.06) | |
| 3 | 0.96 (0.91 1.01) | 0.97 (0.90 1.04) | 0.96 (0.90 1.02) | |
| 4 | 0.96 (0.92 1.01) | 0.96 (0.90 1.03) | 0.96 (0.91 1.02) | |
| 5 | 0.98 (0.94 1.03) | 0.98 (0.91 1.05) | 0.97 (0.91 1.03) | |
AMI, acute myocardial infarction; STEMI, ST-elevation myocardial infarction; NSTEMI, non-ST-elevation myocardial infarction.
*P < 0.05, adjusted for temperature and relative humidity.