Table 4.
Association between ambient air pollution concentrations at home and school and zBMI categories.
| Air pollutant | Adjusted OR | 95% Confidence interval |
|---|---|---|
| Home: | ||
| NO2 | ||
| T2 vs T1 | 1.17 | (0.95, 1.44) |
| T3 vs T1 | 1.12 | (0.91, 1.39) |
| Per 13.7 μg/m3a | 1.05 | (0.97, 1.13) |
| PM2.5 | ||
| T2 vs T1 | 1.05 | (0.86, 1.29) |
| T3 vs T1 | 1.13 | (0.92, 1.38) |
| Per 2.7 μg/m3a | 1.05 | (0.96, 1.15) |
| PM10 | ||
| T2 vs T1 | 1.03 | (0.84, 1.26) |
| T3 vs T1 | 1.19 | (0.97, 1.46) |
| Per 5.6 μg/m3a | 1.10 | (1.00, 1.22) |
| PMcoarse | ||
| T2 vs T1 | 1.07 | (0.87, 1.33) |
| T3 vs T1 | 1.13 | (0.92, 1.45) |
| Per 3.7 μg/m3a | 1.08 | (0.95, 1.22) |
| School: | ||
| NO2 | ||
| T2 vs T1 | 1.28 | (1.03, 1.61) |
| T3 vs T1 | 1.16 | (0.96, 1.42) |
| Per 22.3 μg/m3a | 1.09 | (0.92, 1.28) |
| PM2.5 | ||
| T2 vs T1 | 1.35 | (1.07, 1.68) |
| T3 vs T1 | 1.09 | (0.87, 1.36) |
| Per 10.7 μg/m3a | 1.00 | (0.93, 1.08) |
| EC | ||
| T2 vs T1 | 1.26 | (1.01, 1.60) |
| T3 vs T1 | 1.23 | (0.98, 1.56) |
| Per 0.9 μg/m3a | 1.09 | (0.97, 1.22) |
| UFP | ||
| T2 vs T1 | 1.19 | (0.96, 1.51) |
| T3 vs T1 | 1.30 | (1.03, 1.64) |
| Per 13,010 particles/cm3a | 1.11 | (0.96, 1.29) |
Adjusted for maternal and paternal education, maternal and paternal country of birth, paternal employment status, number of siblings, household status and maternal smoking during pregnancy.
a
Adjusted OR (odds ratio) of obese/overweight versus normal weight (or, equivalently, of obese versus overweight/normal) associated to an increase in the pollutant level equivalent to a interquartile range increase.