Long-term ambient ozone concentration and the incidence of asthma in nonsmoking adults: The Ahsmog study
- Environmental Protection Agency, Research Triangle Park, NC (United States). National Health and Environmental Effects Research Lab.
- Loma Linda Univ., CA (United States). School of Public Health
- Univ. of Arizona Coll. of Medicine, Tucson, AZ (United States).
The authors conducted a prospective study of a cohort of 3091 nonsmokers, ages 27 to 87 years, to evaluate the association between long-term ambient ozone exposure and development of adult-onset asthma. Over a 15-year period, 3.2% of males and 4.3% of females reported new doctor diagnoses of asthma. For males, they observed a significant relationship between report of doctor diagnosis of asthma and 20-year mean 8-h average ambient ozone concentration. The authors observed no such relationship for females. Other variables significantly related to development of asthma were a history of ever-smoking for males, and for females, number of years worked with a smoker, age, and a history of childhood pneumonia or bronchitis. Addition of other pollutants to the models did not diminish the relationship between ozone and asthma for males. These data suggest that long-term exposure to ambient ozone is associated with development of asthma in adult males.
- Sponsoring Organization:
- Environmental Protection Agency, Washington, DC (United States); California State Air Resources Board, Sacramento, CA (United States)
- OSTI ID:
- 347663
- Journal Information:
- Environmental Research, Vol. 80, Issue 2Pt1; Other Information: PBD: Feb 1999
- Country of Publication:
- United States
- Language:
- English
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