Air pollution and daily mortality in Seoul and Ulsan, Korea

Jong-Tae Lee, Dongchun Shin, Yong Chung

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

The relationship between air pollution and daily mortality for the period 1991-1995 was examined in two Korean cities, Seoul and Ulsan. The observed concentrations of sulfur dioxide (SO 2; mean = 28.7 ppb), ozone (O 3; mean = 29.2 ppb), and total suspended particulates (TSP; mean = 82.3 μg/m 3) during the study period were at levels below Korea's current ambient air quality standards. Daily death counts were regressed separately in the two cities, using Poisson regression on SO 2, O 3 and/or TSP controlling for variability in the weather and seasons. When considered singly in Poisson regression models controlling for seasonal variations and weather conditions, the nonaccidental mortality associated with a 50-ppb increment in a 3-day moving average of SO 2 concentrations, including the concurrent day and the preceding 2 days, was 1.078 [95% confidence interval (CI), 1.057-1.099] for Seoul and 1.051 (CI, 0.991-1.115) for Ulsan. The race ratio was 1.051 (CI, 1.031-1.072) in Seoul and 0.999 (CI, 0.361-1.039) in Ulsan per 100 μg/m 3 for TSP, and 1.015 (CI, 1.005-1.025) in Seoul and 1.020 (0.889-1.170) in Ulsan per 50 ppb for 1-hr maximum O 3. When TSP was considered simultaneously with other pollutants, the TSP association was no longer significant. We observed independent pollution effects on daily mortality even after using various approaches to control for either weather or seasonal variables in the regression model. This study demonstrated increased mortality associated with air pollution at both SO 2 and O 3 levels below the current World Health Organization recommendations.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalEnvironmental Health Perspectives
Volume107
Issue number2
Publication statusPublished - 1999 Feb 1
Externally publishedYes

Fingerprint

Air Pollution
Korea
Air pollution
confidence interval
atmospheric pollution
Confidence Intervals
Weather
Air quality standards
mortality
Sulfur Dioxide
Mortality
Ozone
Pollution
Health
weather
pollution effect
World Health Organization
sulfur dioxide
ambient air
air quality

Keywords

  • Air pollution
  • Daily mortality
  • O , Seoul
  • SO
  • Total suspended particulates
  • Ulsan

ASJC Scopus subject areas

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

Cite this

Air pollution and daily mortality in Seoul and Ulsan, Korea. / Lee, Jong-Tae; Shin, Dongchun; Chung, Yong.

In: Environmental Health Perspectives, Vol. 107, No. 2, 01.02.1999, p. 149-154.

Research output: Contribution to journalArticle

Lee, Jong-Tae ; Shin, Dongchun ; Chung, Yong. / Air pollution and daily mortality in Seoul and Ulsan, Korea. In: Environmental Health Perspectives. 1999 ; Vol. 107, No. 2. pp. 149-154.
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