Table 2 Summary statistics for average weekly black smoke exposure estimates (μg/m3) averaged by gestational period, for births in Newcastle upon Tyne 1962-92
Exposure window | Minimum | Median | Maximum | IQR |
|---|---|---|---|---|
Whole pregnancy | 3.7 | 33.8 | 499 | 17-108 |
Trimester 1 | 3.3 | 32.4 | 749 | 17-94 |
Trimester 2 | 3.1 | 32.0 | 722 | 17-95 |
Trimester 3 | 3.1 | 30.8 | 714 | 16-95 |