Table 6.
Percent Increase in Risk (and 95% Confidence Intervals) of SGA/VSGA Associated with Each 4 μg/m3 Increase in Mean 3rd Trimester PM2.5 Concentration, by Pregnancy Complication. New Jersey Air Pollution and Adverse Birth Outcomes Study 1999-2003 (n=88,678)
| SMALL FOR GESTATIONAL AGE | VERY SMALL FOR GESTATIONAL AGE |
|||
|---|---|---|---|---|
| Percent increase in risk |
95% confidence interval |
Percent increase in risk |
95% confidence interval |
|
| Any Complication | ||||
| No | 4.7 | (0.6, 9.0) | 1.5 | (−6.1, 9.7) |
| Yes | 2.2 | (−6.1, 11.3) | 12.6 | (0.1, 26.7) |
| Placental Abruption | ||||
| No | 4.0 | (0.3, 7.9) | 4.1 | (−2.6, 11.2) |
| Yes | 11.7 | (−21.7, 59.5) | 7.6 | (−29.8, 64.9) |
| Placenta Previa | ||||
| No | 3.9 | (0.2, 7.8) | 4.1 | (−2.5, 11.2) |
| Yes | 23.2 | (−20.9, 91.9) | 3.2 | (−43.0, 86.9) |
| Pre-clampsia | ||||
| No | 4.2 | (0.4, 8.2) | 4.4 | (−2.6, 11.9) |
| Yes | 2.7 | (−13.8, 22.3) | 3.9 | (−15.7, 28.1) |
| Gestational Hypertension | ||||
| No | 4.3 | (0.4, 8.4) | 3.2 | (−4.0, 10.9) |
| Yes | 3.9 | (−7.8, 17.1) | 12.9 | (−3.3, 31.9) |
| Premature Rupture of the Membrane | ||||
| No | 3.7 | (−0.1, 7.7) | 3.3 | (−3.5, 10.5) |
| Yes | 14.6 | (−3.3, 35.9) | 21.9 | (−3.6, 54.2) |
| Gestational Diabetes | ||||
| No | 4.6 | (0.8, 8.6) | 4.3 | (−2.5, 11.5) |
| Yes | −9.3 | (−24.7, 9.3) | 1.4 | (−27.0, 40.9) |
NOTE: All risk estimates adjusted for maternal race/ethnicity, maternal education, maternal age, marital status, trimester prenatal care began; maternal alcohol use, maternal smoking, maternal drug use, percentage of population (≥ 25 years) in maternal residence census tract with < 12 years of education, percentage of population (≥ 25 years) in maternal residence census tract with at least 4 years of college, and percentage of population in maternal residence census tract below federally defined poverty line.