Summary statistics of estimated annual average air pollution concentrations for the home(birth) addresses of the full cohort
| PM2.5 μg·m−3 | Soot/filter absorbance·10−5m−1 | NO2 μg·m−3 | |
| Minimum | 13.5 | 0.77 | 12.6 |
| 10th percentile | 14.0 | 1.15 | 14.7 |
| 25th percentile | 14.8 | 1.33 | 18.2 |
| 50th percentile | 17.3 | 1.78 | 26.0 |
| Mean | 16.9 | 1.71 | 25.2 |
| 75th percentile | 18.1 | 1.91 | 28.8 |
| 90th percentile | 19.0 | 2.16 | 34.4 |
| Maximum | 25.2 | 3.68 | 58.4 |
Data include the subjects for whom the questionnaire at 4 yrs was completed and estimated exposures were available, n = 3,532. PM2.5: particles of 50% cut-off aerodynamic diameter of 2.5 μm; NO2: nitrogen dioxide.