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Chronic exposure to ambient ozone and asthma hospital admissions among children

Shao Lin1, Xiu Liu, Linh H Le

  • 1Center for Environmental Health, New York State Department of Health, Troy, NY 12180, USA. sx105@health.state.ny.us

Environmental Health Perspectives
|December 17, 2008
PubMed

Insights

Chronic exposure to high ozone levels significantly increases childhood asthma admissions in New York State. Younger children and those in low socioeconomic groups face a higher risk, indicating environmental health disparities.

Area of Science:

  • Environmental Health
  • Pediatric Respiratory Medicine
  • Epidemiology

Background:

  • The link between long-term air pollution exposure and negative health effects requires further investigation.
  • Chronic air pollution, particularly ozone, is a growing public health concern.

Purpose of the Study:

  • To examine the association between chronic exposure to elevated ozone concentrations and hospital admissions for childhood asthma in New York State.
  • To identify vulnerable populations disproportionately affected by ozone exposure.

Main Methods:

  • A birth cohort in New York State (1995-1999) was tracked until asthma diagnosis or end of 2000.
  • Asthma admissions and birth data were linked with ambient ozone levels using state health and environmental records.
  • Logistic regression models adjusted for numerous individual, maternal, and environmental factors to assess ozone exposure indicators.

Main Results:

  • Higher chronic ozone exposure levels were significantly linked to increased asthma admissions in children (ORs 1.16-1.68).
  • A clear dose-response relationship was observed between ozone levels and asthma admissions.
  • Children who were younger, from low socioeconomic backgrounds, or lived in New York City showed heightened susceptibility.

Conclusions:

  • Sustained exposure to ambient ozone is a potential risk factor for childhood asthma admissions.
  • Children from disadvantaged socioeconomic backgrounds and younger children are at greater risk for asthma exacerbation due to ozone exposure.
Abstract

Keywords:
air pollutionasthmachildrenchronichospital admissionsozone

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