Finding · as stated by the study, recorded by Coridum · status verified-machine

Finding F-0705

“The geometric mean NO2 concentration was 10.5 ppb (range: 0.65–138).”

Tillery et al. Indoor Air Nicotine, Nitrogen Dioxide Exposure, and COVID-19 Outcomes in a Great Plains Tribal Community (2026). Indoor air. Page 2. CKB 6516

Structure

Factor
Nitrogen dioxide (NO₂)
Population
members of multigenerational Tribal households
Setting
home, US
Study design
community-engaged cross-sectional study in a Great Plains Tribal community (Cheyenne River Sioux Tribe): 290 multigenerational households, week-long passive monitors for airborne nicotine and nitrogen dioxide, saliva serology for SARS-CoV-2 and a questionnaire on COVID-19 outcomes; multilevel logistic regression grouped by household, adjusted for age, sex, household income and household size (class 4)
Effect
median 10.5
Averaging time
1 week
Sample
100 homes
Caveat
geometric mean recorded under measure median; the body of the paper prints a geometric standard deviation of 238 for this mean, which cannot be right, so only the range is carried

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.