PM2.5 components | All MI Percentage change (95% CI) | STEMI Percentage change (95% CI) | NSTEMI Percentage change (95% CI) |
---|---|---|---|
Single pollutant regression model | |||
EC | 0.10 (−0.18 to 0.37) | −0.15 (−0.64 to 0.33) | 0.13 (−0.26 to 0.52) |
SO42− | −0.02 (−0.30 to 0.27) | −0.29 (−0.79 to 0.21) | −0.08 (−0.48 to 0.32) |
Two pollutant regression model | |||
EC (adjusted for O3) | 0.06 (−0.24 to 0.35) | −0.28 (−0.79 to 0.24) | 0.11 (−0.30 to 0.52) |
SO42− (adjusted for O3) | −0.02 (−0.31 to 0.26) | −0.31 (−0.82 to 0.19) | −0.09 (−0.49 to 0.31) |
*IQR for daily mean EC=0.213 µg/m3 and IQR for daily mean SO42−=1.710 µg/m3.
†The conditional logistic regression model fits the pollutant(s) as unconstrained distributed lags 0–2 and adjusts for, the weekly RCGP influenza-like illness consultation rates per 100 000 England and Wales population, two natural cubic splines (df=5) for temperature (mean lag 0–1and mean lag 2–6), public holidays and a sine/cosine annual cycle.
EC, elemental carbon; MI, myocardial infarction; NSTEMI, non-ST-elevation MI; STEMI, ST-elevation MI.