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PM2.5 and ozone trim North Carolina birth weights
Among 457,642 NC births, pregnancy PM2.5 and ozone were linked to slightly lower birth weight and higher SGA odds, while race/SES gaps were much larger.
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How many North Carolina births were analyzed?
457,642 after exclusions (from 604,757 registered live births).
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
How was air pollution assigned?
Daily census-tract PM2.5 and 8-hour ozone from a Bayesian space-time fusion model.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
What was the IQR PM2.5 effect on birth weight?
A 3.1 g reduction (95% CI 3.0–3.2).
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
What was the IQR ozone effect on birth weight?
A 7.4 g reduction (95% CI 5.2–9.5).
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
Did PM2.5 raise SGA odds?
Yes; adjusted OR 1.03 (1.02–1.05), but not LBW or PTB.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
Which binary outcomes did ozone affect?
SGA (OR 1.04) and LBW (OR 1.06), not preterm birth.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
How large was the Black–White birth-weight gap?
−187.5 g for NHB versus NHW mothers.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
Were pollution means very different by race/SES?
They remained relatively consistent across race/ethnicity and SES.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
What share of births were LBW, SGA, and PTB?
7.3% LBW, 10.2% SGA, 9.8% PTB.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified
What exposure error do the authors acknowledge?
Modeled outdoor concentrations ignore activity patterns, indoor sources, and ventilation.
Source: Assessing the impact of race, social factors and air pollution on birth outcomes: a population-based study · DOI · quote verified