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Ambient air pollution and emergency department visits for stroke

Other Titles
 대기오염과 뇌졸중으로 인한 응급실 방문 
Authors
 손정우 
Department
 Dept. of Preventive Medicine and Public Health (예방의학교실) 
Issue Date
2014
Description
Dept. of Public Health/석사
Abstract
Background: Many epidemiological studies have shown short-term effects of ambient air pollution on cardiovascular diseases. Several studies have investigated the relationship between air pollutant exposure and stroke but the findings have been inconsistent.Objective: We conducted a time-series study to assess the association between ambient air pollution and emergency department (ED) visits for stroke in Seoul, Republic of Korea.Materials and methods: The ED data from 2005 to 2009 were obtained from the Health Insurance Review and Assessment Service, and the number of ED visits for stroke was 94,539. We used a generalized additive model with Poisson distribution, adjusting for temperature (cubic spline, df=6), relative humidity (cubic spline, df=3), day of the week, and national holidays. The risk was expressed as a RR with one standard deviation increase and its 95% CI. We explored the lag effects with cumulative lag models (lag0-1 to lag0-3). Stratification of age and gender to analyze the differences was conducted and the RRs were estimated. Results: In the same day exposure, the RRs of ED visits for stroke were 1.017 (95% CI, 1.011-1.024) per 12.04 ppb increment of NO2 and 1.013 (1.006-1.020) per 0.24 ppm increment of CO. In lag0-3, the RRs for stroke were 1.006 (1.000-1.013) per 36.70 μg/m3 increment of PM10, 1.012 (1.004-1.020) per 10.04 ppb increment of O3 and 1.009 (1.002-1.016) for CO. In oldest elderly group, significantly positive correlation was found for hemorrhagic stroke in contrast to other age groups and the RR was 1.044 (1.011-1.077) per 10.04 ppb increment of O3 in lag1.Conclusion: Ambient air pollutants are significantly correlated with ED visits for stroke.
Files in This Item:
T013236.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 2. Thesis
Yonsei Authors
Sohn, Jung Woo(손정우)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/134992
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