Finding F-1794

“The average PM2.5 concentration (standard deviation) for the 30 homes during the seven-day period was 34.6 μg/m3 (41.3 μg/m3), and median (min, max) values were 15.5 μg/m3 (7.3 μg/m3, 193 μg/m3).”

Rahman et al. Cleaning the Flue in Wood-Burning Stoves Is a Key Factor in Reducing Household Air Pollution (2022). Toxics. Page 1. CKB 8806

Structure

Source: Wood
Factor: Particulate matter (PM₂.₅ and PM₁₀)
Setting: home
Study design: measurement study of homes heated with wood stoves: fine particulate matter measured indoors over a seven-day period in each home, with stove age, flue cleaning and levoglucosan examined as predictors (class 4)
Effect: mean 34.6
Sample: 30 homes
Caveat: the standard deviation is larger than the mean and the median is less than half of it, so a few homes carry the average

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