Boston: percentage change in myocardial infarction, and pneumonia admissions for an increase in the difference between the 90th and 10th centile of PM2.5, BC, NO2, ozone, CO, and PM non-traffic for the same day and the mean of the same and previous day. Significant results are in bold type
| Pollutant | Unit | Myocardial infarction cohort | Pneumonia cohort | ||||||
|---|---|---|---|---|---|---|---|---|---|
| % | 95% CI | 90%–10% | % | 95% CI | 90%–10% | ||||
| PM25 lag 0 | μg/m3 | 8.50 | 1.89 | 14.43 | 17.17 | 6.48 | 1.13 | 11.43 | 17.14 |
| mean 01 | μg/m3 | 8.65 | 1.22 | 15.38 | 16.32 | 5.56 | −0.45 | 11.27 | 16.32 |
| BC lag 0 | μg/m3 | 6.98 | −0.27 | 13.76 | 2.01 | 10.76 | 4.54 | 15.89 | 2.05 |
| mean 01 | μg/m3 | 8.34 | 0.21 | 15.82 | 1.69 | 11.71 | 4.79 | 17.36 | 1.69 |
| NO2 lag 0 | ppb | 10.21 | 3.82 | 15.61 | 20.41 | −0.16 | −4.73 | 4.42 | 20.41 |
| mean 01 | ppb | 12.67 | 5.82 | 18.04 | 16.80 | 2.26 | −2.55 | 7.01 | 16.78 |
| CO lag 0 | ppm | 5.59 | 0.01 | 10.87 | 0.475 | 5.45 | 1.10 | 9.51 | 0.475 |
| mean 01 | ppm | 4.43 | −1.01 | 9.68 | 0.369 | 5.12 | 0.83 | 9.16 | 0.369 |
| Ozone lag 0 | ppb | −0.90 | −8.36 | 6.55 | 30.67 | −5.67 | −11.78 | 0.11 | 30.67 |
| mean 01 | ppb | −3.12 | −10.94 | 4.59 | 26.22 | −7.74 | −14.32 | −1.78 | 26.22 |
| PM non-traffic | μg/m3 | 7.99 | −0.34 | 15.71 | 13.27 | −0.57 | −7.51 | 6.36 | 13.44 |
| mean 01 | μg/m3 | 4.39 | −3.12 | 11.70 | 10.28 | −0.94 | −7.20 | 5.32 | 10.28 |