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Action Towards Health Equity and Improved Air Quality in the Duwamish Valley: A Multilevel Asthma Intervention
NCT06552013 · University of Washington
In plain English
Click the button to translate this study into plain language — what it is, who qualifies, and what participation looks like.
About this study
The goal of this randomized control trial is to learn if box fans and filters can reduce asthma symptoms and improve indoor air quality in children ages 6 - 17 years old with asthma living in the Duwamish Valley, Seattle, Washington. The main question it aims to answer are:
* Do box fans with filters improve asthma symptoms?
* Do box fans with filters improve an objective measure used to monitor lung function known as forced expiratory volume during the first second (FEV1)? Researchers will compare children living in households with high quality filters to those in households with sham filters to see if air quality and asthma symptoms improve.
Participants will
* fill out several questionnaires
* monitor their lung function with a peak flow meter
* place an air monitor in their homes to monitor indoor air quality
* run the box fan when they are at home
Eligibility criteria
Inclusion Criteria:
* age (6-17 years)
* poorly controlled physician diagnosed asthma defined as more than four days with asthma symptoms in the past two weeks, use of asthma rescue medication for more than four days in the past two weeks, or health care utilization due to asthma in the past year (hospitalization, emergency room visit, or unscheduled clinic visit)
* living in Georgetown and South Park neighborhoods of Seattle
Exclusion Criteria:
* children with unstable housing or shared custody arrangements
Study design
Enrollment target: 80 participants
Allocation: randomized
Masking: double
Age groups: child
Timeline
Starts: 2024-07-30
Estimated completion: 2028-07
Last updated: 2024-08-13
Interventions
Other: MERV 13 filterOther: Sham filter
Primary outcomes
- • Asthma symptoms (ACQ will be measured weekly for 6 consecutive weeks, two pre-intervention weeks (before box fans have been given to participant) and four weeks while fans are being used in the home. Symptoms will also be assessed at the six month follow-up visit.)
- • FEV1 (FEV1 measures will be taken daily, once in the morning and once at night for the six week study time frame. Prior to the six month follow up we will ask participants to take three consecutive days of FEV1 measurements, for an additional 6 measures)
Sponsor
University of Washington · other
With: National Institute of Environmental Health Sciences (NIEHS)
Contacts & investigators
ContactAnjum Hajat, PhD, MPH · contact · anjumh@uw.edu · 206-685-3618
InvestigatorAnjum Hajat, PhD, MPH · principal_investigator, University of Washington
All locations (1)
Duwamish River Community CoaltionRecruiting
Seattle, Washington, United States