Finding F-1767

“The median (IQR) PM2.5 concentrations were 95 (39–229) μg/m3 indoors, 25 (13–48) μg/m3 outdoors, and 31 μg/m3 (16–62) in the patios (p < 0.001).”

Kaplan et al. Evaluation of Secondhand Smoke Using PM2.5 and Observations in a Random Stratified Sample in Hospitality Venues from 12 Cities (2019). International journal of environmental research and public health. Page 1. CKB 7507

Structure

Source: Tobacco smoke (secondhand smoke)
Factor: Particulate matter (PM₂.₅ and PM₁₀)
Setting: hospitality venue
Study design: measurement study of hospitality venues with indoor smoking bans: fine particulate matter measured indoors, outdoors and on the patio of each venue, with the number of smokers counted by observation (class 4)
Effect: median 95
Caveat: measured in venues where indoor smoking was banned, and the indoor concentration is still the highest of the three

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.