Finding F-0055

“School E that had the highest PM2.5 levels among the Athi River schools, also had the highest RR=3.54 (95% CI: 1.62-7.71) and OR=5.16 (95% CI: 2.05- 14.83) values for small airway obstruction during the dry season.”

Levels of PM10 and PM2.5 and Respiratory Health Impacts on School-Going Children in Kenya… (2020). Journal of health & pollution. Page 14. CKB 7888

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Outcome: Airway obstruction
Population: schoolchildren aged 9 to 14
Setting: classroom, KE (January 2018 to July 2019)
Study design: cross-sectional field study: five public primary schools in an industrialised township and one control school, PM10 and PM2.5 sampled in classrooms and outdoors over 8-hour school days in the dry and wet seasons, 578 pupils examined by questionnaire and spirometry (class 4)
Effect: RR 3.54 (1.62–7.71)
Averaging time: 8-hour school-day means
Caveat: small airway obstruction means reduced FEF25-75%; school E did not take part in the wet season

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.