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Asthma Medication Use and Air Pollution in California: A Cross-Sectional Analysis

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  • Charles Griffiths
  • Nathalie B. Simon
  • Tracey J. Woodruff

Abstract

In this study, we examine the effects of chronic exposure to air pollution on asthma exacerbation through a cross-sectional analysis of asthma prescriptions for quick-relief medications at the 5 digit zip code level in California. Using information on the use of maintenance therapies by each patient, we are able to stratify our data by asthma severity as well as by age. In general, we find a positive relationship between asthma and both PM10 and ozone levels. We find that prescriptions for quick-acting inhalers for children increases with PM10, and this relationship generally does not level off effect except for mild intermittent asthmatics. Ozone also generally increases the number of prescriptions for ages 5 through 17, as well as for severe asthmatics and some moderate asthmatics at younger ages. However, prescriptions and ozone show the opposite relationship for the adults and the very young (ages 0-4).

Suggested Citation

  • Charles Griffiths & Nathalie B. Simon & Tracey J. Woodruff, 2009. "Asthma Medication Use and Air Pollution in California: A Cross-Sectional Analysis," NCEE Working Paper Series 200906, National Center for Environmental Economics, U.S. Environmental Protection Agency, revised Oct 2009.
    • Handle: RePEc:nev:wpaper:wp200906
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    File URL: https://www.epa.gov/environmental-economics/working-paper-asthma-medication-use-and-air-pollution-california-cross
    File Function: First version, 2009
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    1. Stephen P. Kaluzny & Silvia C. Vega & Tamre P. Cardoso & Alice A. Shelly, 1998. "S+SpatialStats and GIS," Springer Books, in: S+SpatialStats, chapter 7, pages 169-201, Springer.
    2. Stephen P. Kaluzny & Silvia C. Vega & Tamre P. Cardoso & Alice A. Shelly, 1998. "S+SpatialStats," Springer Books, Springer, number 978-1-4615-7826-0, January.
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