Effects of air pollutants on acute stroke mortality

Yun Chul Hong, Jong-Tae Lee, Ho Kim, Eun Hee Ha, Joel Schwartz, David C. Christiani

Research output: Contribution to journalArticle

197 Citations (Scopus)

Abstract

The relationship between stroke and air pollution has not been adequately studied. We conducted a time-series study to examine the evidence of an association between air pollutants and stroke over 4 years (January 1995-December 1998) in Seoul, Korea. We used a generalized additive model to regress daily stroke death counts for each pollutant, controlling for seasonal and long-term trends and meteorologic influences, such as temperature, relative humidity, and barometric pressure. We observed an estimated increase of 1.5% [95% confidence interval (CI), 1.3-1.8%] and 2.9% (95% CI, 0.3-5.5%) in stroke mortality for each interquartile range increase in particulate matter <10 μm aerodynamic diameter (PM10) and ozone concentrations in the same day. Stroke mortality also increased 3.1% (95% CI, 1.1-5.1%) for nitrogen dioxide, 2.9% (95% CI, 0.8-5.0%) for sulfur dioxide, and 4.1% (95% CI, 1.1-7.2%) for carbon monoxide in a 2-day lag for each interquartile range increase in single-pollutant models. When we examined the associations among PM10 levels stratified by the level of gaseous pollutants and vice versa, we found that these pollutants are interactive with respect to their effects on the risk of stroke mortality. We also observed that the effects of PM10 on stroke mortality differ significantly in subgroups by age and sex. We conclude that PM10 and gaseous pollutants are significant risk factors for acute stroke death and that the elderly and women are more susceptible to the effect of particulate pollutants.

Original languageEnglish
Pages (from-to)187-191
Number of pages5
JournalEnvironmental Health Perspectives
Volume110
Issue number2
Publication statusPublished - 2002 Mar 4
Externally publishedYes

Fingerprint

Air Pollutants
Stroke
Nitrogen Dioxide
mortality
Sulfur Dioxide
Particulate Matter
Mortality
confidence interval
Ozone
Carbon Monoxide
Air pollution
Confidence Intervals
pollutant
Time series
Atmospheric humidity
Aerodynamics
Temperature
air pollutant
effect
Air Pollution

Keywords

  • Air pollution
  • Mortality
  • Stroke

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Public Health, Environmental and Occupational Health

Cite this

Hong, Y. C., Lee, J-T., Kim, H., Ha, E. H., Schwartz, J., & Christiani, D. C. (2002). Effects of air pollutants on acute stroke mortality. Environmental Health Perspectives, 110(2), 187-191.

Effects of air pollutants on acute stroke mortality. / Hong, Yun Chul; Lee, Jong-Tae; Kim, Ho; Ha, Eun Hee; Schwartz, Joel; Christiani, David C.

In: Environmental Health Perspectives, Vol. 110, No. 2, 04.03.2002, p. 187-191.

Research output: Contribution to journalArticle

Hong, YC, Lee, J-T, Kim, H, Ha, EH, Schwartz, J & Christiani, DC 2002, 'Effects of air pollutants on acute stroke mortality', Environmental Health Perspectives, vol. 110, no. 2, pp. 187-191.
Hong YC, Lee J-T, Kim H, Ha EH, Schwartz J, Christiani DC. Effects of air pollutants on acute stroke mortality. Environmental Health Perspectives. 2002 Mar 4;110(2):187-191.
Hong, Yun Chul ; Lee, Jong-Tae ; Kim, Ho ; Ha, Eun Hee ; Schwartz, Joel ; Christiani, David C. / Effects of air pollutants on acute stroke mortality. In: Environmental Health Perspectives. 2002 ; Vol. 110, No. 2. pp. 187-191.
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