Patterns of asthma symptoms and perceptions of harm from seasonal atmospheric events in rural Western Montana

International Journal of Occupational and Environmental Health
John C SchumpertAndrij Holian

Abstract

To characterize the frequency of and relationship between self-reported asthma symptoms and physician-diagnosed asthma, identify seasons associated with heightened symptoms, and describe the influence of seasonal atmospheric events and ambient environmental factors on asthma symptoms and perceptions of harm, a seven-county region of Western Montana was surveyed, utilizing a two-stage sampling method. Respondents were queried concerning asthma-related history, symptoms, and environmental concerns. Of 2,790 respondents, 12% reported physician-diagnosed asthma. Eighteen percent reported one or more and 9% reported two or more asthma-related symptoms. Over 70% of asthmatics reported worsened asthma symptoms during wildland-fire smoke exposure. Of those reporting summer as the season they experienced the greatest breathing problems, 81% reported breathing problems from wildland-fire smoke (p < 0.01). Of those reporting worsened symptoms in fall or winter, 61% reported breathing problems during winter inversions (p < 0.001).

References

Aug 20, 2002·Critical Reviews in Toxicology·Yves Alarie
Mar 29, 2003·The European Respiratory Journal·J CraneUNKNOWN International Study of Asthma and Allergies in Childhood Phase I study group

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Citations

Jun 22, 2010·The Journal of Asthma : Official Journal of the Association for the Care of Asthma·Curtis W NoonanTodd Wilson

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