142
Participants
Start Date
March 31, 2014
Primary Completion Date
February 21, 2020
Study Completion Date
September 10, 2021
HEPA Air Cleaner
Air cleaners containing HEPA and carbon filters (Austin HealthMate HM400) and capable of removing PM and NO2 will be placed in the bedroom and room where the participant reports spending the most time.
Sham HEPA Air Cleaner
Homes in the control group will receive sham air cleaners that have the internal HEPA and carbon filters removed, but which will run normally, including similar noise, airflow and overall appearance compared to active air cleaners, thus blinding participants to filter status.
Johns Hopkins University, Baltimore
National Institute of Environmental Health Sciences (NIEHS)
NIH
Johns Hopkins University
OTHER