UMMS Affiliation

Department of Medicine, Division of Cardiovascular Medicine

Date

3-21-2007

Document Type

Article

Medical Subject Headings

Aged; Case-Control Studies; Female; Humans; Male; Massachusetts; Myocardial Infarction; Urban Population; *Vehicle Emissions

Disciplines

Biostatistics | Epidemiology | Health Services Research

Abstract

BACKGROUND: Long-term exposure to particulate air pollution has been associated with an increased risk of dying from cardiopulmonary and ischemic heart disease, yet few studies have evaluated cardiovascular end points other than mortality. We investigated the relationship between long-term exposure to traffic and occurrence of acute myocardial infarction (AMI) in a case-control study.

METHODS: A total of 5,049 confirmed cases of AMI were identified between 1995 and 2003 as part of the Worcester Heart Attack Study, a community-wide study examining changes over time in the incidence of AMI among greater Worcester, Massachusetts, residents. Population controls were selected from Massachusetts resident lists. We used cumulative traffic within 100 m of subjects' residence and distance from major roadway as proxies for exposure to traffic-related air pollution. We estimated the relationship between exposure to traffic and occurrence of AMI using logistic regression, and we adjusted for the following potential confounders: age, sex, section of the study area, point sources emissions of particulate matter with aerodynamic diameter < 2.5 microm, area socioeconomic characteristics, and percentage of open space.

RESULTS: An increase in cumulative traffic near the home was associated with a 4% increase in the odds of AMI per interquartile range [95% confidence interval (CI), 2-7%], whereas living near a major roadway was associated with a 5% increase in the odds of AMI per kilometer (95% CI, 3-6%).

CONCLUSIONS: These results provide support for an association between long-term exposure to traffic and the risk of AMI.

Rights and Permissions

Citation: Environ Health Perspect. 2007 Jan;115(1):53-7. Link to article on publisher's website

Related Resources

Link to Article in PubMed

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.