Table 3.

Exposure to Major Roadways, Traffic Density and Risk of Respiratory Infection by Early Childhood Data from 1,263 mother-infant pairs participating in Project Viva.

	Parsimonious Model*		Fully Adjusted Model†
Exposure	Relative Risk‡	95% Confidence Interval	Relative Risk†	95% Confidence Interval
Log of Distance to Major Roadway (m)	0.93	(0.87, 0.98)	0.92	(0.87, 0.98)
Log of Traffic Density (vehiclekm/ day)	1.06	(0.99, 1.13)	1.05	(0.98, 1.13)

^*Adjusted for maternal race/ethnicity, infant sex, season of birth, and time

^†Adjusted for maternal race/ethnicity, maternal education, smoking during pregnancy, breastfeeding, smokers in household after birth, other children <12y in household, census tract income (quartile), census tract education, infant sex, gestational age, birth weight for gestational age z-score, season of birth, childcare attendance, and time

^‡Relative risk scaled per IQR increase in exposure