Finding F-0247

“Indoor concentrations in the homes averaged 27.7 (standard deviation = 35.9) μg/m3, compared with concurrent outdoor concentrations of 13.6 (7.5) μg/m3.”

Valli Particle Concentrations in Inner-City Homes of Children with Asthma: The Effect of Smoking, Cooking, and Outdoor Pollution (2003). Environmental health perspectives. Page 1. CKB 6278

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Population: inner-city children with asthma
Setting: outdoors at homes, US
Study design: Inner-City Asthma Study: continuous 10-min particle measurements (optical scattering, corrected to gravimetric PM2.5) for 2-week periods in 294 homes of children with asthma in seven US cities, with a multivariate model of indoor sources (class 4)
Effect: mean 13.6
Averaging time: 2-week means of 10-min readings
Sample: 294 homes

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.