Finding F-0152

“The difference between PM10 and PM2.5 measurements (coarse particles, PM2.5–10) was approximately 5 μg/m3 for both indoor and outdoor environments for all study groups, except inside asthmatic children’s residences, where the mean PM2.5–10 was double (10.2 μg/m3).”

Valli Exposure assessment of particulate matter for susceptible populations in Seattle… (2003). Environmental health perspectives. Page 3. CKB 6277

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Population: elderly with COPD or coronary heart disease, healthy elderly, and children with asthma
Setting: home and outdoors, US
Study design: 2-year exposure assessment panel study of 108 individuals with and without COPD, coronary heart disease and asthma in Seattle, with personal, indoor and outdoor PM2.5 and PM10 monitoring over 10-day sessions (class 4)
Effect: mean 5
Sample: 108 participants
Caveat: printed as approximately 5 μg/m3

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.