Table 7.
Adjusteda association between self-reported truck traffic on the street of residence and current wheeze in 13- to 14-year-old children participating in the ISAAC phase 3 study in countries in different income categories.
| No. |
OR (95% confidence interval)b |
||||
|---|---|---|---|---|---|
| Income level | Country | Center | High vs. never | Medium vs. never | Low vs. never |
| High | 5 | 17 | 1.26 (1.04–1.52) | 1.13 (0.98–1.31) | 1.01 (0.89–1.16) |
| Upper middle | 11 | 18 | 1.47 (1.23–1.74) | 1.31 (1.11–1.54) | 1.12 (0.95–1.31) |
| Lower middle | 12 | 20 | 1.33 (1.10–1.60) | 1.29 (1.08–1.54) | 1.06 (0.89–1.25) |
| Low | 2 | 10 | 1.45 (1.00–2.11) | 1.45 (1.02–2.07) | 1.21 (0.87–1.69) |
a
Adjusted for sex, language, GNI, maternal education, maternal and paternal smoking, exercise, television watching, fast food consumption, current paracetamol use, siblings, and cooking fuel.
b
High, almost the whole day; medium, frequently during the day; low, seldom.