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Int. J. Environ. Res. Public Health 2016, 13(4), 366; doi:10.3390/ijerph13040366

Association between Atmospheric Fine Particulate Matter and Hospital Admissions for Chronic Obstructive Pulmonary Disease in Southwestern Taiwan: A Population-Based Study

1
Department of Nursing, Chang Gung University of Science and Technology, Chiayi Campus, Chiayi County 613, Taiwan
2
Chronic Diseases and Health Promotion Research Center, Chang Gung University of Science and Technology, Chiayi County 613, Taiwan
3
Department of Respiratory Care, Chang Gung University of Science and Technology, Chiayi County 613, Taiwan
4
Division of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, Chiayi County 613, Taiwan
5
Department of Respiratory Care, Chang Gung University, Taoyuan 333, Taiwan
6
Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Paul B. Tchounwou
Received: 19 February 2016 / Revised: 21 March 2016 / Accepted: 22 March 2016 / Published: 25 March 2016
View Full-Text   |   Download PDF [281 KB, uploaded 25 March 2016]

Abstract

Objectives: This paper reports on the findings of a population-based study to evaluate the relationship between atmospheric fine particulate matter (PM2.5) levels and hospital admissions for chronic obstructive pulmonary disease (COPD) in southwestern Taiwan over a three-year period, 2008–2010. Methods: Data on hospital admissions for COPD and PM2.5 levels were obtained from the National Health Insurance Research database (NHIRD) and the Environmental Protection Administration from 2008 to 2010, respectively. The lag structure of relative risks (RRs) of hospital admissions for COPD was estimated using a Poisson regression model. Results: During the study period, the overall average hospitalization rate of COPD and mean 24-h average level of PM2.5 was 0.18% and 39.37 μg/m3, respectively. There were seasonal variations in PM2.5 concentrations in southwestern Taiwan, with higher PM2.5 concentrations in both spring (average: 48.54 μg/m3) and winter (49.96 μg/m3) than in summer (25.89 μg/m3) and autumn (33.37 μg/m3). Increased COPD admissions were significantly associated with PM2.5 in both spring (February–April) and winter (October–January), with the relative risks (RRs) for every 10 μg/m3 increase in PM2.5 being 1.25 (95% CI = 1.22–1.27) and 1.24 (95% CI = 1.23–1.26), respectively, at a lag zero days (i.e., no lag days). Lag effects on COPD admissions were observed for PM2.5, with the elevated RRs beginning at lag zero days and larger RRs estimates tending to occur at longer lags (up to six days, i.e., lag 0–5 days). Conclusions: In general, findings reveal an association between atmospheric fine particulate matter (PM2.5) and hospital admissions for COPD in southwestern Taiwan, especially during both spring and winter seasons. View Full-Text
Keywords: fine particulate matter; chronic obstructive pulmonary disease; hospital admissions fine particulate matter; chronic obstructive pulmonary disease; hospital admissions
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hwang, S.-L.; Guo, S.-E.; Chi, M.-C.; Chou, C.-T.; Lin, Y.-C.; Lin, C.-M.; Chou, Y.-L. Association between Atmospheric Fine Particulate Matter and Hospital Admissions for Chronic Obstructive Pulmonary Disease in Southwestern Taiwan: A Population-Based Study. Int. J. Environ. Res. Public Health 2016, 13, 366.

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Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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