Air Quality, Atmosphere & Health

, Volume 6, Issue 4, pp 759–767

Use of free-standing filters in an asthma intervention study

  • Stuart Batterman
  • Liuliu Du
  • Edith Parker
  • Thomas Robins
  • Toby Lewis
  • Bhramar Mukherjee
  • Erminia Ramirez
  • Zachary Rowe
  • Wilma Brakefield-Caldwell
Article

Abstract

This study characterizes the use of HEPA air filters provided to 89 households participating in an intervention study investigating the respiratory health of children with asthma. Free-standing filters were placed in the child's bedroom and monitored continuously for nearly a year in each household. Filter use was significantly affected by study phase, season, and monitoring week. During the “intensive” weeks when a community education worker and a field technician visited the household, the use rate averaged 70 ± 33 %. During season-long “non-intensive” periods between seasonal visits, use dropped to 34 ± 30 %. Filter use rapidly decreased during the 3 to 4 weeks following each intensive, and was slightly higher in spring, summer, and in the evening and at night when the child was likely to be home, although households did not follow consistent diurnal patterns. While participants expressed an understanding of the benefits of filter use and reported good experiences with them, use rates were low, particularly during unobserved non-intensive periods. The provision of free-standing air filters to individuals or households must be considered an active intervention that requires monitoring and evaluation; otherwise, unknown and unexpected patterns of filter use may alter and possibly bias results due to exposure misclassification.

Keywords

Air quality Behavior HEPA Indoor environment Intervention Exposure misclassification 

Supplementary material

11869_2013_216_MOESM1_ESM.docx (281 kb)
ESM 1(DOCX 280 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Stuart Batterman
    • 1
  • Liuliu Du
    • 1
  • Edith Parker
    • 2
  • Thomas Robins
    • 1
  • Toby Lewis
    • 1
    • 3
  • Bhramar Mukherjee
    • 1
  • Erminia Ramirez
    • 4
  • Zachary Rowe
    • 5
  • Wilma Brakefield-Caldwell
    • 6
  1. 1.School of Public HealthUniversity of MichiganAnn ArborUSA
  2. 2.College of Public HealthUniversity of IowaIowa CityUSA
  3. 3.School of MedicineUniversity of MichiganAnn ArborUSA
  4. 4.Community Health and Social ServicesDetroitUSA
  5. 5.Friends of ParksideDetroitUSA
  6. 6.Community Action Against AsthmaDetroitUSA

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