Lag time structure of cardiovascular deaths attributed to ambient air pollutants in Ahvaz, Iran, 2008–2015
Objectives There are few studies about the association between breathing polluted air and increased risk of cardiovascular diseases and cardiac death in the Middle East. This study aimed to investigate the relation between air pollutants and cardiovascular mortality (based on ICD-10) in Ahvaz. Mate...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
Nofer Institute of Occupational Medicine
2018-07-01
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Series: | International Journal of Occupational Medicine and Environmental Health |
Subjects: | |
Online Access: | http://www.journalssystem.com/ijomeh/Lag-time-Structure-of-Cardiovascular-deaths-attributed-to-ambient-air-pollutants,77971,0,2.html |
Summary: | Objectives
There are few studies about the association between breathing polluted air and increased risk of cardiovascular diseases and cardiac death in the Middle East. This study aimed to investigate the relation between air pollutants and cardiovascular mortality (based on ICD-10) in Ahvaz.
Material and methods
In this ecological study, the data about cardiovascular disease mortality and air pollutants from
March 2008 until March 2015 was inquired from the Ahvaz City Authority and the Khuzestan Province Environmental Protection
Agency. The quasi-Poisson, second degree polynomial constrained, distributed lag model; using single and cumulative lag
structures, adjusted by trend, seasonality, temperature, relative humidity, weekdays and holidays was used for the data analysis
purposes.
Results
Findings indicated a direct significant relation between an interquartile range (IQR) increase in ozone and
cardiovascular deaths among men after 3 days’ lag. There was also a significant relation between an IQR increase in particulate
matter below 10 μm and cardiovascular deaths for all people, over 60 years old and under 18 years old after 3 and 13 days’ lags.
There was a significant relation between an IQR increase in nitrogen dioxide and carbon monoxide, and cardiovascular deaths
in the case of under 18-year-olds (in the lag 11) and over 60-year-olds (in the lag 9), respectively. We finally found a significant
association between an IQR increase in sulfur dioxide and cardiovascular deaths in the case of men, under 18-year-olds and
from 18- to 60-year-olds in the lag 9, 0, and 11, respectively (p-values < 0.05).
Conclusions
It appears that air pollution is significantly
associated with cardiovascular deaths in Ahvaz City. Int J Occup Med Environ Health 2018;31(4):459–473 |
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ISSN: | 1232-1087 1896-494X |