| EFW (g)a | HC (mm)a | AC (mm)a | BPD (mm)a | FL (mm)a |
---|
\(\upbeta\)(95% CI) | \(\upbeta\)(95% CI) | \(\upbeta\)(95% CI) | \(\upbeta\)(95% CI) | \(\upbeta\)(95% CI) |
---|
NO2 (ppb) | -35.6 (-98.7, 27.5) | -1.2 (-4.0, 1.6) | -2.6 (-6.3, 1.2) | 0.001 (-0.9, 0.9) | 0.1 (-0.6, 0.9) |
O3 (ppb) | 13.6 (-38.1, 65.2) | -0.7 (-3.0, 1.6) | 0.8 (-2.3, 3.8) | 0.2 (-0.5, 1.0) | 0.2 (-0.4, 0.8) |
PM2.5 (\(\mu\) g/m3) | -57.5 (-114.5, -0.4)* | -1.0 (-3.5, 1.6) | -3.8 (-7.1, -0.4)* | -0.4 (-1.2, 0.4) | -0.3 (-1.1, 0.3) |
PM10 (\(\mu\) g/m3) | -22.4 (-75.5, 30.7) | 0.3 (-2.0, 2.7) | -1.8 (-4.9, 1.3) | -0.2 (-0.9, 0.6) | 0.3 (-0.5, 0.7) |
- Beta estimates are standardized to the IQR of the pregnancy average ambient air pollutant NO2 = 5.6 ppb; O3 = 5.7 ppb; PM2.5 = 2.2 g\(\mu\)/m3 PM10 = 7.1 g\(\mu\)/m3
- EFW Estimated Fetal Weight, HC Head Circumference, AC Abdominal Circumference, BPD Biparietal Diameter, FL Femur Length
- aAdjusted for maternal age at time of study recruitment, maternal race and ethnicity, maternal education level, household income, parity, pre-pregnancy body mass index (BMI), sex of the fetus, gestational age at time of ultrasound scan, average temperature, season of ultrasound, ultrasound technician, and recruitment site
- *p < 0.05;