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 language | English |
|---|---|
| Pages (from-to) | 149-154 |
| Number of pages | 6 |
| Journal | Environmental Health Perspectives |
| Volume | 107 |
| Issue number | 2 |
| Publication status | Published - 1999 Feb 1 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Air pollution and daily mortality in Seoul and Ulsan, Korea
AU - Lee, Jong-Tae
AU - Shin, Dongchun
AU - Chung, Yong
PY - 1999/2/1
Y1 - 1999/2/1
N2 - 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.
AB - 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.
KW - Air pollution
KW - Daily mortality
KW - O , Seoul
KW - SO
KW - Total suspended particulates
KW - Ulsan
UR - http://www.scopus.com/inward/record.url?scp=0033024053&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033024053&partnerID=8YFLogxK
M3 - Article
VL - 107
SP - 149
EP - 154
JO - Environmental Health Perspectives
JF - Environmental Health Perspectives
SN - 0091-6765
IS - 2
ER -