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KMID : 0358120030290020181
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Journal of the Korean Public Health Association
2003 Volume.29 No. 2 p.181 ~ p.189
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A Time-Series Study of Ambient Air Pollution in Relation to Daily Mortality in Gwangju, 1998-2001
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Cho Yong-Sung
Lee Jong-Tae
Kim Yoon-Shin
Hyun Youn-Joo
Park Won-Seok
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Abstract
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This study is performed to examine the relationship between air pollution exposure and mortality in Gwangju for the years of 1998 - 2001. Daily counts of death were analyzed by general additive Poisson model, with adjustment for effects of seasonal trend, air temperature, humidity, and day of the week as confounders in a nonparametric approach. Daily death counts were associated with CO(current day), O3(6 day before), PM10(current day), NO2(l day before), SO2(2 day before). Increase of 29.74 ㎍/㎥(interquartile range) in PM10 was associated with 1.4 % (96% CI = 0% - 2.8%) increase in the daily number of death. This effect was greater in children(less than 15 aged) and elderly(more than 65 aged). We concluded that Gwangju had 1 - 24 % increase in mortality in association with IQR in air pollutants. Daily variations in air pollution within the range currently occurring in Gwangju might have an adverse effect on daily mortality. These findings also support the hypothesis that air pollution, at levels below the current ambient air quality standards of Korea, is harmful to sensitive subjects, such as children or elderly.
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KEYWORD
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Gwangju, Air pollution, Daily death counts, Time-series analysis, General additive model
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