Table 3.
Association between self-reported truck traffic on the street of residence and symptoms in 13- to 14-year-old children.
| No. |
OR (95% confidence interval) |
|||||
|---|---|---|---|---|---|---|
| Group/symptom | Country | Center | Total | High vs. never | Medium vs. never | Low vs. never |
| All study participantsa | ||||||
| Current wheeze | 46 | 110 | 315,572 | 1.46 (1.36–1.56) | 1.33 (1.25–1.41) | 1.13 (1.07–1.19) |
| Asthma ever | 46 | 110 | 315,572 | 1.23 (1.16–1.30) | 1.11 (1.05–1.17) | 1.04 (0.99–1.09) |
| Current wheeze–video | 35 | 86 | 246,658 | 1.53 (1.40–1.67) | 1.35 (1.25–1.47) | 1.13 (1.04–1.22) |
| Severe asthma symptoms | 46 | 108 | 310,808 | 1.65 (1.53–1.79) | 1.35 (1.26–1.46) | 1.10 (1.03–1.18) |
| Rhinoconjunctivitis | 46 | 110 | 315,572 | 1.49 (1.41–1.59) | 1.28 (1.21–1.35) | 1.09 (1.03–1.14) |
| Eczema | 45 | 109 | 313,085 | 1.59 (1.47–1.72) | 1.35 (1.25–1.44) | 1.09 (1.03–1.17) |
| Study participants with complete confounder dataa,b | ||||||
| Current wheeze | 30 | 65 | 152,973 | 1.47 (1.33–1.62) | 1.31 (1.20–1.43) | 1.09 (1.00–1.18) |
| Asthma ever | 30 | 65 | 152,973 | 1.24 (1.14–1.35) | 1.12 (1.04–1.21) | 1.02 (0.95–1.10) |
| Current wheeze–video | 26 | 52 | 121,930 | 1.58 (1.39–1.79) | 1.35 (1.20–1.52) | 1.13 (1.01–1.26) |
| Severe asthma symptoms | 30 | 63 | 149,488 | 1.72 (1.53–1.93) | 1.37 (1.22–1.52) | 1.09 (0.99–1.21) |
| Rhinoconjunctivitis | 30 | 65 | 152,973 | 1.51 (1.38–1.65) | 1.29 (1.19–1.40) | 1.08 (1.00–1.16) |
| Eczema | 30 | 65 | 152,973 | 1.67 (1.49–1.87) | 1.37 (1.23–1.52) | 1.10 (0.99–1.21) |
| Study participants with complete confounder data, adjusted for potential confoundersa,b,c | ||||||
| Current wheeze | 30 | 65 | 152,973 | 1.35 (1.23–1.49) | 1.24 (1.13–1.35) | 1.07 (0.98–1.16) |
| Asthma ever | 30 | 65 | 152,973 | 1.18 (1.08–1.28) | 1.08 (1.00–1.17) | 1.01 (0.94–1.09) |
| Current wheeze–video | 26 | 52 | 121,930 | 1.44 (1.26–1.64) | 1.28 (1.14–1.44) | 1.11 (0.99–1.23) |
| Severe asthma symptoms | 30 | 63 | 149,488 | 1.53 (1.36–1.72) | 1.26 (1.13–1.41) | 1.07 (0.97–1.18) |
| Rhinoconjunctivitis | 30 | 65 | 152,973 | 1.39 (1.27–1.52) | 1.21 (1.12–1.32) | 1.06 (0.98–1.14) |
| Eczema | 30 | 65 | 152,973 | 1.54 (1.37–1.73) | 1.30 (1.17–1.45) | 1.08 (0.97–1.19) |
a
Adjusted for sex, region of the world, language, and GNI.
b
Centers included if ≥ 70% data were available for all covariates; analysis was restricted to those with complete data for all covariates.
c
Also adjusted for maternal education, cooking fuel, maternal and paternal smoking, television watching, exercise, siblings (older and younger), fast-food consumption, and paracetamol use.