Table 4.
Effects of in utero/first year of life and childhood non-freeway NOx exposures on 4-year childhood BMI trajectories in children in CHS
| Non-Freeway NOx (ppb) | BMI Growth Per Yeara Effect (95% CI) |
BMI at Age 10 Yearsa Effect (95% CI) |
|---|---|---|
| Model 1 | ||
| In utero (n = 2072) | 0.03 (−0.05, 0.1) | 0.1 (− 0.3, 0.6) |
| Childhood | 0.08 (−0.007, 0.2) | 0.6 (0.08, 1.03)* |
| Model 2 | ||
| First year of life (n = 2318) | − 0.02 (− 0.1, 0.06) | −0.07 (− 0.5, 0.4) |
| Childhood | 0.1 (0.01, 0.2)* | 0.6 (0.1, 1.1)* |
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 non-freeway NOx with 14.7 ppb, first year of life non-freeway NOx with 18.7 ppb, and childhood non-freeway NOx with 9.4 ppb
*p < 0.05