. Author manuscript; available in PMC: 2019 May 1.

Published in final edited form as: J Allergy Clin Immunol. 2018 Feb 2;141(5):1932–1934.e7. doi: 10.1016/j.jaci.2017.11.062

Table 1.

Air Pollution Exposures and Odds of Asthma in Early and Mid-Childhood

	Early Childhood (3–5 years) N=1,444		Mid-Childhood (7–10 years) N=1,242
	Asthma/Reactive airways	Recurrent wheeze	Ever asthma	Current asthma
	OR (95% CI) per unit increase in exposure
Proximity to Roadway
At birth	1.21 (1.00, 1.48)	0.97 (0.73, 1.27)	1.02 (0.81, 1.28)	0.99 (0.77, 1.28)
At visit	1.22 (0.99, 1.50)	0.88 (0.66, 1.18)	1.34 (1.06, 1.68)	1.16 (0.89, 1.52)
Black Carbon
1^st year of life	1.13 (0.93, 1.38)	1.14 (0.87, 1.49)	0.99 (0.80, 1.23)	1.07 (0.84, 1.36)
Lifetime	1.32 (1.03, 1.69)	1.26 (0.91, 1.74)	1.00 (0.74, 1.35)	1.05 (0.75, 1.46)
Community-Level PM₂₅
1^st year of life	2.25 (1.17, 4.33)	2.62 (1.08, 6.34)	0.94 (0.47, 1.85)	0.95 (0.45, 2.04)
Lifetime	2.35 (1.12, 4.91)	2.89 (1.06, 7.85)	1.03 (0.45, 2.35)	0.95 (0.38, 2.38)

Home address location changed at least once after birth for 46% of participants by the early childhood visit, and for 62% of participants by the mid-childhood visit. Results scaled from the 75^th to the 25^th percentile of the log transformed distance to major roadway, per 0.2 μg/m³ for BC, and per 2 μg/m³ for community-level PM_2.5. Associations with PM_2.5 are adjusted for local primary PM_2.5 generated within 100 m of home. All models adjusted for child age, sex, race/ethnicity, breastfeeding duration, birth weight for gestational age z-score, infantile bronchiolitis, maternal and paternal asthma, household income and smoking, census tract income and education, season of birth and date of visit.