Finding F-0671

“The mean (± SD) in-home NO2 concentration was 30.0 ± 33.7 (range, 2.9–394.0) ppb.”

Bishop A Longitudinal Study of Indoor Nitrogen Dioxide Levels and Respiratory Symptoms in Inner-City Children with Asthma (2008). Environmental health perspectives. Page 1. CKB 6656

Structure

Factor: Nitrogen dioxide (NO₂)
Population: inner-city children aged 2-6 years with asthma
Setting: child's bedroom, US
Study design: longitudinal study of 150 inner-city children aged 2-6 years with physician-diagnosed asthma in Baltimore: indoor air monitored for 72 hours in the child's bedroom at baseline, 3 and 6 months, caregiver questionnaire on asthma symptoms in the previous two weeks and health care use (class 3)
Effect: mean 30.0
Averaging time: 72-hour measurement, mean of visits
Sample: 150 children

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.