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Table 3 Effects of in utero/first year of life and childhood freeway NOx exposures on 4-year childhood BMI trajectories in CHS children

From: Longitudinal associations of in utero and early life near-roadway air pollution with trajectories of childhood body mass index

Freeway NOx (ppb)

BMI Growth Per Yeara

Effect (95% CI)

BMI at Age 10 Yearsa

Effect (95% CI)

Model 1

 In utero (n = 2072)

0.05 (−0.02, 0.1)

0.1 (− 0.3, 0.5)

 Childhood

−0.02 (− 0.1, 0.05)

0.05 (− 0.4, 0.5)

Model 2

 First year of life (n = 2318)

0.1 (0.03, 0.2)*

0.5 (0.02, 0.9)*

 Childhood

− 0.06 (− 0.1, 0.02)

−0.1 (− 0.6, 0.3)

  1. aBMI growth (kg/m2) over study follow up and difference in attained BMI at age 10 years scaled to 2 standard deviations of in utero freeway NOx exposure with 40.1 ppb, first year of life freeway NOx with 39.1 ppb, and childhood freeway NOx with 37.8 ppb
  2. *p < 0.05
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Environmental Health

ISSN: 1476-069X