Finding F-1512

“Personal‐level interventions significantly reduced indoor PM2.5 (SMD = −2.27; 95% CI: −2.98 to −1.55) and PM10 (SMD = −3.87; 95% CI: −4.59 to −3.16) levels.”

Effectiveness of Personal‑Level Protective Measures Against Air Pollution on Respiratory Health: A Systematic Review and Meta‑Analysis of Randomized Controlled Trials (2026). Indian J Occup Environ Med. Page 1. CKB 1574

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Intervention: Air filtration and air purifiers
Setting: home
Study design: systematic review and meta-analysis of 27 randomised controlled trials of personal-level protective measures against household air pollution: indoor particulate matter and lung function pooled as standardised mean differences with GRADE certainty (class 2)
Effect: SMD 3.87 (-4.59–-3.16)
Caveat: a standardised mean difference pooled across trials, printed as negative; the forced expiratory volume in one second of the same review shows no significant change (SMD 0.04)

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.