Finding F-0121

“Conclusions: 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.”

Effectiveness of particulate matter filtration: systematic review and meta-analysis Efetividade da filtração de material particulado: revisão sistemática e metanálise Eficacia de la filtración de partículas: revisión sistemática y metanálisis (2026). Rev Bras Enferm. Page 1. CKB 1547

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Intervention: Air filtration and air purifiers
Study design: systematic review of 47 studies with meta-analysis of seven homogeneous studies on the effectiveness of filters for particulate matter (class 2)
Sample: 47 studies
Caveat: the sentence is the abstract's conclusion; the review's own meta-analysis covers seven homogeneous studies and its text layer is garbled on page 6

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.