195 53

Association between Diurnal Variation of Ozone Concentration and Stroke Occurrence: 24-Hour Time Series Study

Title
Association between Diurnal Variation of Ozone Concentration and Stroke Occurrence: 24-Hour Time Series Study
Author
이형중
Keywords
AMBIENT AIR-POLLUTION; EMERGENCY-DEPARTMENT VISITS; CASE-CROSSOVER ANALYSIS; ISCHEMIC-STROKE; CIRCADIAN VARIATION; RISK-FACTOR; EXPOSURE; MORTALITY; ONSET; ADMISSIONS
Issue Date
2016-03
Publisher
PUBLIC LIBRARY SCIENCE
Citation
PLOS ONE, v. 11, NO 3, Article number e0152433, Page. 1-14
Abstract
Background and Purpose Increasing ozone concentrations have been known to damage human health and ecosystems. Although ozone tends to display diurnal variation, most studies have reported only on the association between daily ozone concentrations and ischemic stroke occurrence on the same day, or with a 1-day lag. We investigated the effect of the diurnal variation of ozone on ischemic stroke occurrence during the same day. Methods We included a consecutive series of 1,734 patients from January 1, 2008, to December 31, 2014, at a single tertiary hospital in Seoul, South Korea. We evaluated differences between temperature and pollutants at the time of stroke onset for each time interval and averaged those parameters across the 7-year study period. Results During the interval from 13: 00 to 16: 59, we found a positive association between ischemic stroke occurrence and ozone concentration relative to other time periods. Upper median ozone levels from 13: 00 to 16: 59 were positively correlated with ischemic stroke (odds ratio, 1.550; 95% confidence intervals, 1.220 to 1.970; P = < 0.001) when compared with lower median levels. Conclusions The results show diurnal patterns of ischemic stroke occurrence based on upper and lower median ozone levels for a 24-hour period, which extends understanding of the association between stroke occurrence and environmental influences.
URI
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0152433http://hdl.handle.net/20.500.11754/34379
ISSN
1932-6203
DOI
10.1371/journal.pone.0152433
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
Files in This Item:
Association between Diurnal Variation of Ozone Concentration and Stroke Occurrence 24-Hour Time Series Study.pdfDownload
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE