Traffic and Childhood Asthma
Author Information
Author(s): McConnell Rob, Berhane Kiros, Yao Ling, Jerrett Michael, Lurmann Fred, Gilliland Frank, Künzli Nino, Gauderman Jim, Avol Ed, Thomas Duncan, Peters John
Primary Institution: Department of Preventive Medicine, Keck School of Medicine, University of Southern California
Hypothesis
Does local traffic-related exposure increase the risk of asthma and wheeze in southern California school children?
Conclusion
Living near a major road is associated with an increased risk of asthma, especially in children without a parental history of asthma.
Supporting Evidence
- Children living within 75 m of a major road had a higher risk of lifetime asthma.
- The risk of prevalent asthma increased with decreasing distance to the roadway.
- Girls showed larger associations with living near major roads compared to boys.
- Children without a parental history of asthma had the highest risk associated with traffic exposure.
Takeaway
Kids who live close to busy roads are more likely to have asthma, especially if their parents don't have asthma.
Methodology
The study assessed residential proximity to major roads and evaluated asthma prevalence through questionnaires among children aged 5-7.
Potential Biases
Potential selection bias due to parents with asthma choosing homes away from major roads.
Limitations
The study relied on self-reported asthma diagnoses and may not account for all confounding factors.
Participant Demographics
Most participants were Hispanic children aged 5-7, with a significant portion living in low-income households.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI, 1.01–1.86
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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