Table 3.
Effects of in utero/first year of life and childhood freeway NOx exposures on 4-year childhood BMI trajectories in CHS children
| 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) |
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
*p < 0.05