Finding · as stated by the study, recorded by Coridum · status verified-machine
Finding F-0669
“The geometric mean (GM) for NO2 decreased by 36% from 20.16 to 12.79 ppb (p < 0.001).”
Structure
- Factor
- Nitrogen dioxide (NO₂)
- Intervention
- Air purifiers
- Population
- low-income households with gas stoves
- Setting
- dwelling, US
- Study design
- intervention study in low-income homes with gas stoves in Lowell, Massachusetts: indoor NO2 and PM2.5 with stove use, temperature and humidity measured over 5-7 days per month, HEPA/carbon filter air purifiers introduced after the fourth month, linear mixed models with homes as random effects (class 3)
- Effect
- difference 36
- Caveat
- the concentrations are in ppb; the percentage is the change in geometric mean
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.