Finding F-0341

“Compared to casement windows, projecting windows were associated with higher RH (B = 3.61%, p = 0.003), higher PM2.5 (B = 3.17 μg/m3, p = 0.005), and higher HCHO (B = 0.012 mg/m3, p = 0.019).”

Window typology as a determinant of indoor air quality in naturally ventilated tropical African offices (2026). Sci Rep. Page 1. CKB 1116

Structure

Factor: Formaldehyde (CH₂O)
Intervention: Natural ventilation
Setting: office, NG
Study design: cross-sectional observational study of 54 naturally ventilated government offices in Enugu, Nigeria: CO, CO2, formaldehyde, TVOC, PM2.5 and humidity measured and regressed on window typology (casement, projecting, louvered) with architectural covariates (class 4)
Effect: difference 0.012
Sample: 54 rooms

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.