Number of events linked to each pollutant data and per cent change in risk* of MI for all MI, STEMI and non-STEMI diagnoses associated with increased levels of pollutants at lags 0–4 days
| Pollutant | Events | All MI | STEMI | Non-STEMI | |||
|---|---|---|---|---|---|---|---|
| % change (95% CI) | % change (95% CI) | % change (95% CI) | |||||
| CO | 343 914 | 0.2 | (−1.4 to 1.9) | 1.4 | (−1.2 to 3.9) | −0.6 | (−2.8 to 1.6) |
| NO2 | 405 799 | 2.4 | (0.3 to 4.5) | 1.4 | (−1.8 to 4.6) | 3.1 | (0.3 to 6.0) |
| O3 | 410 341 | −1.4 | (−3.1 to 0.4) | −2.8 | (−5.5 to −0.1) | −0.3 | (−2.6 to 2.0) |
| PM10 | 365 151 | −0.6 | (−1.9 to 0.7) | −0.5 | (−2.5 to 1.5) | −0.6 | (−2.3 to 1.1) |
| PM2.5 | 134 964 | −0.4 | (−2.4 to 1.6) | −2.7 | (−5.6 to 0.3) | 1.2 | (−1.4 to 3.8) |
| SO2 | 380 743 | 1.7 | (−0.1 to 3.4) | 0.8 | (−1.9 to 3.5) | 2.3 | (0.0 to 4.7) |
MI, myocardial infarction; STEMI, ST-elevation MIs.
*Per cent change in risk for a 10th–90th centile change in pollutant in 2003–2009.
Data source: MINAP registry, 2003–2009.
CO, carbon monoxide; MINAP, Myocardial Ischaemia National Audit Project; NO2, nitrogen dioxide; PM2.5, particulate matter less than 2.5 μm in aerodynamic diameter; PM10, particulate matter less than 10 μm in aerodynamic diameter; SO2, sulfur dioxide.