Finding F-0349

“For gaseous pollutants, the median concentrations were 0.02 mg/m3 [0.01, 0.04] for HCHO and 0.32 mg/m3 [0.20, 0.47] for TVOC.”

Wang et al. Spatiotemporal Patterns of Indoor Air Pollution and Its Association with Depressive Symptoms Among Schoolchildren in China (2025). Page 6. CKB 1094

Structure

Factor: Formaldehyde (CH₂O)
Population: schoolchildren and adolescents (grades 3-4 and 7)
Setting: classroom and bedroom, CN
Study design: cross-sectional study of schoolchildren and adolescents in China with real-time portable monitoring of PM2.5, PM10, CO2, formaldehyde, TVOC, temperature and humidity in classrooms and bedrooms on weekdays and weekends, depressive symptoms by questionnaire, single-pollutant logistic models (class 4)
Effect: median 0.02

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.