Abstract:
PURPOSE:The purpose of this study was to investigate the effects of short-term and very short-term exposure to particulate matter (PM) exceeding the daily average environmental standards for Korea (≤100 μg/m³ for PM10 and ≤50 μg/m³ for PM2.5) on on asthma-related hospital visits. MATERIALS AND METHODS:This was a population-based, case-crossover study using National Health Insurance and air pollution data between January 1, 2014 and December 31, 2016. The event day was defined as a day when PM exceeded the daily average environmental standard (short-term exposure) or daily average environmental standard for 2 hours (very short-term exposure). The control day was defined as the same day of the week at 1 week prior to the event day. RESULTS:Compared with control days, asthma-related hospital visits on the 24-hr event days and 2-hr event days increased by 4.10% and 3.45% for PM₁₀ and 5.66% and 3.74% for PM2.5, respectively. Asthma-related hospital visits increased from the 24-hr event day for PM₁₀ to 4 days after the event day, peaking on the third day after the event day (1.26, 95% confidence interval, 1.22-1.30). Hospitalizations also increased on the third day after the event. While there was a difference in magnitude, PM2.5 exposure showed similar trends to PM₁₀ exposure. CONCLUSION:We found a significant association between short-term and very short-term PM exposure exceeding the current daily average environmental standards of Korea and asthma-related hospital visits. These results are expected to aid in establishing appropriate environmental standards and relevant policies for PM.
journal_name
Yonsei Med Jjournal_title
Yonsei medical journalauthors
Song DJ,Choi SH,Song WJ,Park KH,Jee YK,Cho SH,Lim DHdoi
10.3349/ymj.2019.60.10.952subject
Has Abstractpub_date
2019-10-01 00:00:00pages
952-959issue
10eissn
0513-5796issn
1976-2437pii
60.952journal_volume
60pub_type
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journal_title:Yonsei medical journal
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journal_title:Yonsei medical journal
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pub_type: 杂志文章
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journal_title:Yonsei medical journal
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2016.57.5.1106
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journal_title:Yonsei medical journal
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journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1999.40.4.301
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journal_title:Yonsei medical journal
pub_type: 杂志文章
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journal_title:Yonsei medical journal
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journal_title:Yonsei medical journal
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pub_type: 临床试验,杂志文章,多中心研究
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