Table 3.
Multivariate model results for change in birth weight associated with full pregnancy pollutant exposures measured at 3 km, 5 km, and 10 km monitor distance.
| change in birth weight, in grams (95% confidence limits) | odds ratio of birth weight under 2,500 g (95% confidence limits) | |
|---|---|---|
| CO, per ppm | ||
| at 3 km | -2.5 (-5.4, 0.3) | 1.02 (0.98, 1.07) |
| at 5 km | -5.9 (-7.8, -3.9) | 1.06 (1.03, 1.09) |
| at 10 km | -5.4 (-6.8, -4.1) | 1.04 (1.02, 1.06) |
| NO2, per pphm | ||
| at 3 km | -8.3 (-9.6, -7.0) | 1.03 (1.01, 1.05) |
| at 5 km | -9.7 (-10.6, -8.8) | 1.04 (1.03, 1.05) |
| at 10 km | -9.0 (-9.6, -8.4) | 1.03 (1.02, 1.04) |
| O3, per pphm | ||
| at 3 km | -8.9 (-10.6, -7.1) | 1.01 (0.98, 1.03) |
| at 5 km | -7.0 (-8.2, -5.8) | 0.98 (0.97, 1.00) |
| at 10 km | -5.7 (-6.6. -4.9) | 0.98 (0.97, 0.99) |
| SO2, per ppb | ||
| at 3 km | 1.7 (-0.3, 3.8) | 1.02 (0.99, 1.06) |
| at 5 km | 2.4 (1.0, 3.7) | 1.01 (0.99, 1.03) |
| at 10 km | 3.1 (2.3, 3.8) | 1.01 (1.00, 1.02) |
| PM10, per 10 μg/m3 | ||
| at 3 km | -5.5 (-6.9, -4.1) | 1.00 (0.97, 1.02) |
| at 5 km | -7.6 (-8.5, -6.7) | 1.00 (0.98, 1.01) |
| at 10 km | -7.2 (-7.9, -6.6) | 1.00 (0.99, 1.01) |
| PM2.5, per 10 μg/m3 | ||
| at 3 km | -9.2 (-12.5,-5.9) | 1.04 (0.99, 1.09) |
| at 5 km | -11.4 (-13.5, -9.3) | 1.05 (1.02, 1.08) |
| at 10 km | -12.8 (-14.3, -11.3) | 1.04 (1.02, 1.07) |
| PMcoarse, per 10 μg/m3 | ||
| at 3 km | -9.4 (-12.8, -6.0) | 1.00 (0.95, 1.05) |
| at 5 km | -10.1 (-12.2, -8.0) | 0.99 (0.96, 1.02) |
| at 10 km | -9.3 (-10.7, -7.9) | 0.99 (0.97, 1.01) |
Models adjusted for infant sex, gestational age, season and year of birth, parity, maternal factors (race/ethnicity, educational attainment, marital status, access to prenatal care, birth place, age) and neighborhood SES measures (poverty rate, home ownership, educational attainment, unemployment rate).