Abstract
Objective. To estimate the impact of traffic flow on the prevalence of asthma among school children of 6 to7 and 13 to 14-years of age. Methods. A cross-sectional study consisting of 5,917 children selected in schools of the Cone Norte of Lima, Peru. Results. For the 6- to 7-year age group the prevalence of medical diagnosis of asthma according to the traffic flow index was 8.6% (CI: 6.8–10.8), 10.3% (CI: 8.4–12.4), and 15.3% (CI:13.3–17.5) at low, medium and high, respectively, and for the 13- to 14-year age group, 11.9% (CI: 9.4–14.6), 13.3% (CI: 11.6–15.2), and 17.1% (CI: 14.7–19.6). Conclusions. For both groups, the prevalence of asthma was significantly related to traffic flow density.
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