Reduction of Outdoor and Indoor PM Source Contributions via Portable Air Filtration Systems in a Senior Residential Facility in Detroit, Michigan.

The Reducing Air Pollution in Detroit Intervention Study (RAPIDS) was designed to evaluate cardiovascular health benefits and personal fine particulate matter (particulate matter < 2.5 μm in diameter, PM) exposure reductions via portable air filtration units (PAFs) among older adults in Detroit, Michigan. This double-blind randomized crossover intervention study has shown that, compared to sham, air filtration for 3 days decreased 3-day average brachial systolic blood pressure by 3.

Reduction of personal PM exposure via indoor air filtration systems in Detroit: an intervention study.

The adverse health effects of fine particulate matter (PM < 2.5 μm in diameter [PM]) air pollution are well-documented. There is a growing body of evidence that high-efficiency particulate arrestance (HEPA) filtration can reduce indoor PM concentrations and deliver some health benefits via the reduction of exposure to PM.