116
Participants
Start Date
January 1, 2016
Primary Completion Date
August 31, 2019
Study Completion Date
August 31, 2019
NO2 Scrubber
an NO2 scrubber that removes NO2 and particles
HEPA filter
a HEPA filter that removes 95% of suspended particles ≥ 0.003 μm in size (but does not remove NO2)
Control
"a control filter designed to be the same size and weight as the other two filters, but filters neither NO2 nor particles"
Yale University, New Haven
Harvard University
OTHER
National Institute of Environmental Health Sciences (NIEHS)
NIH
Yale University
OTHER