Pooled percentage increases under fixed and random effect models for a 10 μg/m3 increase in pollutant levels
| PM10 | Black smoke | |||
|---|---|---|---|---|
| % | 95% CI | % | 95% CI | |
| Cardiac | ||||
| Fixed | 0.5 | 0.3 to 0.7 | 0.8 | 0.5 to 1.2 |
| Random | 0.5 | 0.2 to 0.8 | 1.1 | 0.4 to 1.8 |
| Cardiac over 65 years | ||||
| Fixed | 0.7 | 0.4 to 1.0 | 0.9 | 0.4 to 1.3 |
| Random | 0.7 | 0.4 to 1.0 | 1.3 | 0.4 to 2.2 |
| IHD below 65 years | ||||
| Fixed | 0.3 | −0.1 to 0.6 | 0.1 | −0.4 to 0.5 |
| Random | 0.3 | −0.2 to 0.7 | 0.1 | −0.4 to 0.5 |
| IHD over 65 years | ||||
| Fixed | 0.6 | 0.3 to 0.8 | 1.1 | 0.7 to 1.5 |
| Random | 0.8 | 0.3 to 1.2 | 1.1 | 0.6 to 1.6 |
| Stroke over 65 years | ||||
| Fixed | 0.0 | −0.3 to 0.3 | −0.1−0.5 to 0.4 | |
| Random | 0.0 | −0.3 to 0.3 | 0.0 | −0.7 to 0.6 |