Finding F-0398

“In the indoor air of the schools evaluated, mean CO2 concentrations were in general well above the maximum reference value (984 ppm), being sometimes as high as 1,942 ppm.”

Indoor air quality and health in schools (2014). Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia. Page 4. CKB 6909

Structure

Factor: Carbon dioxide (CO₂)
Population: elementary school children
Setting: classroom, PT
Study design: cross-sectional study of 1,019 students at 51 elementary schools in Coimbra (Portugal): questionnaire on symptoms and diseases with indoor air quality measurements in classrooms in fall/winter and spring/summer (class 4)
Effect: other 1942
Sample: 1019 children
Caveat: maximum of the classroom means

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.