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Asthma and Indoor-air: Reducing Exposures

NCT01869543 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 219

Last updated 2019-03-21

No results posted yet for this study

Summary

Two hundred moderate to severely asthmatic children (6-12 years) will be enrolled in a study to look at the effectiveness of high efficiency filtration of indoor air in homes on reducing asthma symptoms. One intervention group will have high efficiency filters or filtration systems installed in their central heating and air conditioning (HVAC) system. The second intervention group will have high efficiency portable air cleaners placed in the child's bedroom and in the main living area. Each participant will receive true air filtration for a year and a placebo for a year. During the placebo period a sham filter will be used that removes very little of the particles. Measures of health effects will include days of symptoms, unplanned utilization of the healthcare system for asthma-related illness, short-term medication use, peak exhaled flow, spirometry, and exhaled nitric oxide (eNO).

Conditions

Interventions

OTHER

Stand Alone Air Cleaner

This is an environmental intervention using a stand alone air cleaner designed to reduce the air pollution levels in the home.

OTHER

HVAC Modification

This is an environmental intervention that modifies the home HVAC system to include high efficiency air filtration designed to reduce the air pollution levels in the home.

Sponsors & Collaborators

  • University of California, Davis

    lead OTHER

Principal Investigators

  • Deborah Bennett, PhD · University of California, Davis

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
6 Years
Max Age
12 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-07-31
Primary Completion
2017-02-08
Completion
2017-02-08

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01869543 on ClinicalTrials.gov