A review on reducing indoor particulate matter concentrations from personal-level air filtration intervention under real-world exposure situations
Research output: Contribution to journal › Review › Research › peer-review
Improving air quality in indoor environments where people live is of importance to protect human health. In this systematic review, we assessed the effectiveness of personal-level use of air filtration units in reducing indoor particulate matters (PM) concentrations under real-world situations following systematic review guidelines. A total of 54 articles were included in the review, in which 20 randomized controlled/crossover trials that reported the changes in indoor fine PM (PM2.5) concentrations were quantitatively assessed in meta-analysis. Standardized mean differences (SMDs) were calculated for changes in indoor PM concentrations following air filtration interventions. Moderate-to-large reductions of 11%-82% in indoor PM2.5 concentrations were observed with SMD of -1.19 (95% CI: -1.50, -0.88). The reductions in indoor PM concentrations varied by geographical locations, filtration technology employed, indoor environmental characteristics, and air pollution sources. Most studies were graded with low-to-moderate risk of bias; however, the overall certainty of evidence for indoor PM concentration reductions was graded at very low level. Considering the effectiveness of indoor air filtration under practical uses, socio-economic disparities across study populations, and costs of air filter replacement over time, our results highlight the importance of reducing air pollution exposure at the sources.
|Number of pages||15|
|Publication status||E-pub ahead of print - 2021|
- air filtration, indoor air pollution, intervention, meta-analysis, particulate matter, systematic review, DOUBLE-BLIND, ULTRAFINE PARTICLES, CARDIORESPIRATORY HEALTH, CARDIOVASCULAR HEALTH, PM2.5 CONCENTRATIONS, PREGNANT-WOMEN, BLOOD-PRESSURE, POLLUTION, QUALITY, CROSSOVER