Examining associations between childhood asthma and traffic flow using a geographic information system
Autor: | Lance A. Waller, Li Zhu, Moira Sullivan, Paul English, Russell Scalf, Raymond R. Neutra |
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Rok vydání: | 1999 |
Předmět: |
Male
Risk Pediatrics medicine.medical_specialty Geographic information system business.product_category Adolescent Health Toxicology and Mutagenesis Population Environmental health Humans Medicine Child education Vehicle Emissions Asthma education.field_of_study business.industry Public Health Environmental and Occupational Health Case-control study Infant Odds ratio Traffic flow medicine.disease Traffic count Case-Control Studies Child Preschool Female Residence business Delivery of Health Care Research Article |
Zdroj: | Environmental Health Perspectives |
ISSN: | 1552-9924 0091-6765 |
Popis: | Using geographic information systems (GIS) and routinely collected data, we explored whether childhood residence near busy roads was associated with asthma in a low-income population in San Diego County, California. We examined the locations of residences of 5,996 children [less than/equal to] 14 years of age who were diagnosed with asthma in 1993 and compared them to a random control series of nonrespiratory diagnoses (n = 2,284). Locations of the children's residences were linked to traffic count data at streets within 550 ft. We also examined the number of medical care visits in 1993 for children with asthma to determine if the number of visits was related to traffic flow. Analysis of the distribution of cases and controls by quintiles and by the 90th, 95th, and 99th percentiles of traffic flow at the highest traffic street, nearest street, and total of all streets within a 550-ft buffer region did not show any significantly elevated odds ratios. However, among cases, those residing near high traffic flows (measured at the nearest street) were more likely than those residing near lower traffic flows to have two or more medical care visits for asthma than to have only one visit for asthma during the year. The results of this exploratory study suggest that higher traffic flows may be related to an increase in repeated medical visits for asthmatic children. Repeated exposure to particulate matter and other air pollutants from traffic exhaust may aggravate asthmatic symptoms in individuals already diagnosed with asthma. Images Figure 1 |
Databáze: | OpenAIRE |
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