Fine Particulate Air Pollution and Outpatient for Acute Bronchitis：A Case-Crossover Study in Taiwan

• Main Authors: LIN,YI-JING, 林宜靜
• Other Authors: LIN,LIE-FEN
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/37324429870971573880

碩士 === 逢甲大學 === 統計學系 === 105 === Motivation and purpose：World Health Organization (WHO) pointed out that exposure to the Particulate Matter 2.5(PM2.5) for a long time will cause serious impact on people, and even increase the risk of cancer. In recent years, the control policy of PM2.5 and the impact on health and economic efficiency are the issues which attaches great importance to the world. The average annual concentration of the region exceeded the prescribed standard in Taiwan during 2011, which leads to a substantial increase in the number of acute bronchitis of the outpatient or emergency treatment. Therefore this study will investigate if there’s a correlation between acute bronchitis and PM2.5 concentration of our national air quality region in the 2011. Method：This study is according to the information on the outpatient of acute bronchitis related diseases in 2011, as well as the information on monitoring stations of the Environmental Protection Administration (EY), and then we made a further study on the daily medical records in 2011. By using the Person correlation coefficient, case-crossover design, and conditional logistic regression analysis, we explored the relationship of outpatient between acute bronchitis and PM2.5 concentration. Result：The average of 7-9 days before outpatient is the risk period of PM2.5 level, and the average of 14-16 days before outpatient is the Control period. PM2.5 level’s during warm days(≥23℃) is not significant no matter it is in single-pollutant model or two-pollutant models. For the single-pollutant model (it’s not controlled by other atmospheric pollutants), Acute bronchitis during outpatient no matter on warm and cool days or cold days(T<23℃) that PM2.5 shows the positive correlation, with an interquartile range (21.06μg/m3) increased outpatient risk by respectively 7.9% (95%CI=1.1-15.1%) and 25.5% (95%CI=12.0-40.6%). In two-pollutant models, PM2.5 remained significant even controlling for O3 no matter on warm and cool days or cold days. Conclusion：Acute bronchitis morbidities more often during cool days, and the higher levels of PM2.5 with acute bronchitis outpatient was associated.