Table 4—

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.