Action Towards Health Equity and Improved Air Quality in the Duwamish Valley: A Multilevel Asthma Intervention

Part of paid clinical trials in Seattle, Washington.

Sponsor
University of Washington
Study ID
NCT06552013
Status
Recruiting
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Conditions

  • Asthma in Children

Eligibility Criteria

Sex
ALL
Age
6 Years - 17 Years
Healthy Volunteers
Not accepted

Interventions

  • MERV 13 filter — OTHER
    This is an environmental intervention consisting of a low-cost box fan with a MERV 13 filter placed behind it. The company Lasko makes these fans and other environmental appliances.
  • Sham filter — OTHER
    This is an environmental intervention consisting of a low-cost box fan with a sham filter (MERV 1) placed behind it. The company Lasko makes these fans and other environmental appliances.

Study Details

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

Key Dates

Start date
Jul 30, 2024
Status verified
Aug 2024
Primary completion
Jul 31, 2028
Completion
Jul 31, 2028

Study Design

Enrollment
80 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION

Arms

  • Experimental: Sham filter
    Participants in this arm will receive a sham filter for their box fans. These filters receive a MERV rating of 1 and only filter very large particles and debris such as lint, hair and insects. These particles have little to no impact on asthma symptoms. MERV stands for "minimum efficiency reporting value" and a filter receives a MERV rating as determined by the American Society of Heating, Refrigeration, and Air-Conditioning Engineers.
  • Experimental: MERV 13 filter
    Participants in this arm will receive a MERV 13 filter for their box fans. MERV 13 filters trap the majority of small particles, as small as 1 micron. It also traps up to 75% of particles that are as small as 0.3 microns.

Primary Outcome Measure

Asthma symptoms [ Time Frame: 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. ]

Central Contacts

Locations (1)

FacilityCityStateZIPSite coordinators
Duwamish River Community CoaltionSeattleWashington98108
Joseph Santana, MPH
[email protected]
253-235-9148

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By research site
Duwamish River Community Coaltion· Seattle, WA

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