# Effectiveness of particulate matter filtration: systematic review and meta-analysis

## TL;DR

This study reviews scientific evidence to determine which air filters are most effective at reducing particulate matter concentrations.

## Contribution

A systematic review and meta-analysis of filter effectiveness for adsorbing airborne particles.

## Key findings

- High Efficiency Particulate Arrestance filters reduced particulate matter by 70-80%.
- 36 studies tested High Efficiency Particulate Arrestance filters, with 7 used in a homogeneous meta-analysis.

## Abstract

to assess the effectiveness of filters in filtering particulate matter.

a systematic literature review was conducted with the research question: which filters efficiently adsorb chemical and/or biological particles present in the air when tested in scientific interventions? The databases used were Medical Literature Analysis and Retrieval System Online, Web of Science, Scopus, Latin American and Caribbean Literature in Health Sciences, American Chemical Society, Royal Society Chemistry, Sci Finder, and Scientific Electronic Library Online.

forty-seven studies were included in this review. The High Efficiency Particulate Arrestance filter was tested in 36 studies. The seven studies used for the meta-analysis were homogeneous.

filtration performed using the High Efficiency Particulate Arrestance filter reduced particulate matter concentrations by 70% to 80% in the assessments and interventions presented, contributing to the evidence that this filter reduces particulate matter concentrations.

avaliar a efetividade dos filtros na filtração de material particulado.

revisão sistemática da literatura com a pergunta de pesquisa: quais filtros adsorvem partículas químicas e/ou biológicas presentes no ar de forma eficiente quando testados em intervenções científicas? As bases de dados utilizadas foram Medical Literature Analysis and Retrieval System Online, Web of Science, Scopus, Literatura Latino-Americana e do Caribe em Ciências da Saúde, American Chemical Society, Royal Society Chemistry, Sci Finder e Scientific Eletronic Library Online.

foram incluídos nesta revisão 47 estudos. O filtro High Efficiency Particulate Arrestance foi testado em 36 estudos. Os sete estudos utilizados para realização da metanálise foram homogêneos.

a filtração realizada com o uso do filtro High Efficiency Particulate Arrestance reduziu concentrações de material particulado em 70% a 80% nas avaliações e intervenções apresentadas, contribuindo para evidências que esse filtro reduz as concentrações de material particulado.