Table 2.
Exposure to PM2.5, Copollutants and Ambient Temperature for the Longitudinal Study Population Residing in Connecticut and Giving Birth at Least Twice During 2000–2006
| Exposure | First Trimester |
Second Trimester |
Third Trimester |
Whole Pregnancy |
||||
|---|---|---|---|---|---|---|---|---|
| Median (IQR) | 25th–75th Percentile | Median (IQR) | 25th–75th Percentile | Median (IQR) | 25th–75th Percentile | Median (IQR) | 25th–75th Percentile | |
| PM2.5, µg/m3 | 12.41 (3.49) | 10.69–14.18 | 12.30 (3.41) | 10.65–14.06 | 12.13 (3.96) | 10.42–14.38 | 12.38 (2.33) | 11.26–13.59 |
| Carbon monoxide, ppb | 496.42 (278.19) | 374.03–652.22 | 491.40 (274.78) | 376.09–650.86 | 478.41 (279.71) | 363.30–643.00 | 483.24 (261.80) | 380.73–642.53 |
| Nitrogen dioxide, ppb | 20.06 (7.22) | 16.33–23.56 | 19.99 (7.44) | 16.01–23.44 | 19.65 (7.79) | 15.35–23.14 | 19.92 (6.74) | 16.83–23.57 |
| Sulfur dioxide, ppb | 4.05 (3.41) | 2.65–6.06 | 4.12 (3.51) | 2.65–6.17 | 3.95 (3.64) | 2.38–6.03 | 4.48 (2.14) | 3.39–5.53 |
| Temperature, maximum °C | 14.85 (16.16) | 6.99–23.15 | 14.01 (15.90) | 6.71–22.61 | 15.17 (16.79) | 6.53–23.32 | 14.37 (6.82) | 11.25–18.07 |
Abbreviations: IQR, interquartile range; PM2.5, particulate matter with aerodynamic diameter of 2.5 µm or less; ppb, parts per billion.