Finding · as stated by the study, recorded by Coridum · status verified-machine
Finding F-1393
“Levels of PNC and PMC in schools ranged between 33.0-168.0 part/cm3 and 1.7-6.8 μg/m3, respectively.”
Structure
- Factor
- Ultrafine particles (UFP)
- Setting
- classroom
- Study design
- study in schools: particle number and particle mass concentrations in the size range 0.3 to 10 micrometres were measured with an optical particle sizer in classrooms during lessons, and the annual incidence of doctor-diagnosed asthma of the 3,638 children aged 6 to 11 was taken from medical records for each school (class 4)
- Effect
- mean 168.0
- Flags
- implausible
- Caveat
- the printed numbers are far below what an occupied classroom normally shows, so the unit or a factor of a thousand is in doubt; the value is recorded as printed
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.