Volume 28, Issue 169 (2-2019)                   J Mazandaran Univ Med Sci 2019, 28(169): 161-168 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ghorbani N, Yazdani-Charati J, Etemadinejad S, Ghorbani N. Relationship between Air Pollution and Mortality Rate due to Chronic Obstructive Pulmonary Diseases in Mashhad, Iran . J Mazandaran Univ Med Sci 2019; 28 (169) :161-168
URL: http://jmums.mazums.ac.ir/article-1-10216-en.html
Abstract:   (4534 Views)

Background and purpose: Air pollution causes respiratory diseases such as chronic obstructive pulmonary disease (COPD). In this study we aimed at statistical modeling of the effects of air pollution on mortality due to chronic pulmonary disease and COPD in Mashhad, Iran, using negative binomial regression.
Materials and methods: Mortality data due to chronic pulmonary diseases and the average amount of air pollutants per 24 hr were collected from 12 air pollution monitoring stations in Mashhad, 2011. Negative binomial regression was used as an appropriate statistical model to analyze discrete data.
Results: The effects of all pollutants, except PM particles and ozone particles, were found to have direct significant effect on mortality due to chronic pulmonary disease. The ratio of the incidence rate of mortality among patients with chronic pulmonary disease was highest for CO (IRR= 1.37, p<0.001), SO2 (IRR= 1.04, p<0.001), NO2 (IRR= 1.01, p<0.000), NO (IRR=1.003, p<0.000). But ozone had an inverse effect on chronic pulmonary mortality (IRR= 0.96, p<0.000).
Conclusion: Among the pollutants, CO had the highest effect and O3 had a significant reverse effect on the rate of respiratory mortality. At the beginning of winter (January) we observed maximied rate of mortality and air pollution.


Full-Text [PDF 790 kb]   (1248 Downloads)    
Type of Study: Research(Original) | Subject: Biostatistics

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Journal of Mazandaran University of Medical Sciences

Designed & Developed by : Yektaweb