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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