Residential exposure to urban traffic is associated with the poorer neurobehavioral health of Ecuadorian schoolchildren

Khalid M. Khan, M. Margaret Weigel, Sarah Yonts, Diane Rohlman, Rodrigo Armijos

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: We investigated whether chronic traffic-generated air pollution containing fine and ultrafine particulate matter is associated with reduced neurobehavioral performance and behavioral dysfunction in urban Ecuadorian schoolchildren. Also, we examined the effect of child hemoglobin and sociodemographic risk factors on these neurocognitive outcomes. Methods: A convenience sample of healthy children aged 8–14 years attending public schools were recruited in Quito, Ecuador. Child residential proximity to the nearest heavily trafficked road was used as a proxy for traffic-related pollutant exposure. These included high exposure (<100 m), medium exposure (100–199 m) and low exposure (≥ 200 m) from the nearest heavily trafficked road. The Behavioral Assessment and Research System (BARS), a computerized test battery assessing attention, memory, learning and motor function was used to evaluate child neurobehavioral performance. The Child Behavior Checklist (CBCL/6-18) was used to assess child behavioral dysfunction as reported by mothers. The data were analyzed using multiple linear regression. Results: Children with the highest residential exposure to traffic pollutants (< 100 m) had significantly longer latencies as measured by match to sample (b = 410.27; p = 0.01) and continuous performance (b = 37.90; p = 0.02) compared to those living ≥ 200 m away. A similar but non-significant association was observed for reaction time latency. Children living within 100 m of heavy traffic also demonstrated higher scores across all CBCL subscales although only the relationship with thought problems (p = 0.05) was statistically significant in the adjusted model. Conclusion: The study findings suggest that children living within 100 m of heavy traffic appear to experience subtle neurobehavioral deficits that may result from fine and ultrafine particulate matter exposure.

Original languageEnglish (US)
Pages (from-to)31-39
Number of pages9
JournalNeuroToxicology
Volume73
DOIs
StatePublished - Jul 1 2019
Externally publishedYes

Fingerprint

Particulate Matter
Health
Air pollution
Linear regression
Hemoglobins
Data storage equipment
Ecuador
Behavioral Research
Ultrafine
Air Pollution
Child Behavior
Proxy
Checklist
Reaction Time
Linear Models
Mothers
Learning

Keywords

  • Distance from traffic
  • Fine and ultrafine particulate matters
  • Neurobehavioral outcomes
  • Traffic-generated air pollution

ASJC Scopus subject areas

  • Neuroscience(all)
  • Toxicology

Cite this

Residential exposure to urban traffic is associated with the poorer neurobehavioral health of Ecuadorian schoolchildren. / Khan, Khalid M.; Weigel, M. Margaret; Yonts, Sarah; Rohlman, Diane; Armijos, Rodrigo.

In: NeuroToxicology, Vol. 73, 01.07.2019, p. 31-39.

Research output: Contribution to journalArticle

Khan, Khalid M. ; Weigel, M. Margaret ; Yonts, Sarah ; Rohlman, Diane ; Armijos, Rodrigo. / Residential exposure to urban traffic is associated with the poorer neurobehavioral health of Ecuadorian schoolchildren. In: NeuroToxicology. 2019 ; Vol. 73. pp. 31-39.
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