Effect of Short-term Portable Air Purifier Use on Occupant Health Indicators

Summary

The purpose of this research project is to examine whether short-term use of portable air pollution filtration can result in changes in indoor airborne pollutants and impact on cardiovascular and respiratory health outcomes of the inhabitants.

Conditions

• Non-smoking, Healthy Adults

Interventions

DEVICE

True-Washout-Sham Air Filtration Intervention

This intervention involved three sequential steps: (1) 12 to 20 hours of true air filtration intervention; (2) at least two weeks of washout period; (3) 12 to 20 hours of sham air filtration intervention. In the indoor environment, the portable filtration device drew room air, sent it through filter and active carbon (for true filtration) or active carbon alone (sham filtration) and then delivered processed air back to room air. In the study the portable filtration device processes 2.8 cubic meter of room air per minute. The washout period lasted for at least two weeks where no filtration intervention was implemented.

DEVICE

Sham-Washout-True Air Filtration Intervention

This intervention involved three sequential steps: (1) 12 to 20 hours of sham air filtration intervention; (2) at least two weeks of washout period; (3) 12 to 20 hours of true air filtration intervention. In the indoor environment, the portable filtration device drew room air, sent it through filter and active carbon (for true filtration) or active carbon alone (sham filtration) and then delivered processed air back to room air. In the study the portable filtration device processes 2.8 cubic meter of room air per minute. The washout period lasted for at least two weeks where no filtration intervention was implemented.

Sponsors & Collaborators

• Duke University

  collaborator OTHER

• Tsinghua University

  collaborator OTHER

• Rutgers University

  collaborator OTHER

• Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

  lead OTHER

Principal Investigators

• Junfeng Zhang, PhD · Duke University

• Yinping Zhang, PhD · Tsinghua University

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

DOUBLE

Model

CROSSOVER

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2015-11-30

Primary Completion

2015-12-31

Completion

2015-12-31

Countries

• China

Study Locations