Table 5. Association between each 10 µg/m3 increase in PM2.5 concentration in the previous 24 h and emergency department visits for AMI, STEMI, and NSTEMI in single- and multiple-pollutant models.
| AMI | STEMI | NSTEMI | ||||
| OR | 95% CI | OR | 95% CI | OR | 95% CI | |
| PM2.5 | 1.01 | (0.96–1.05) | 1.05* | (1.00–1.11) | 0.98 | (0.92–1.03) |
| PM2.5 + SO2 | 1.02 | (0.97–1.06) | 1.06* | (1.00–1.12) | 0.99 | (0.93–1.06) |
| PM2.5 + NO2 | 1.02 | (0.97–1.06) | 1.04 | (0.97–1.10) | 0.98 | (0.92–1.03) |
| PM2.5 + CO | 1.01 | (0.96–1.05) | 1.03 | (0.97–1.10) | 0.99 | (0.94–1.05) |
| PM2.5 + O3 | 1.01 | (0.97–1.06) | 1.04 | (0.99–1.12) | 0.97 | (0.92–1.03) |
| PM2.5 + SO2 + NO2 + CO | 1.01 | (0.97–1.05) | 1.04 | (0.99–1.12) | 0.98 | (0.92–1.03) |
AMI, acute myocardial infarction; CI, confidence interval; NSTEMI, non-ST-elevation myocardial infarction; OR, odds ratio; STEMI, ST-elevation myocardial infarction.
*P < 0.05, adjusted for temperature and relative humidity.