Skip to main content

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.

From: Ambient air pollution exposure and full-term birth weight in California

  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 μ g/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 μ g/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 μ g/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)
  1. 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).