Finding · as stated by the study, recorded by Coridum · status verified-machine
Finding F-1221
“The indoor concentration of formaldehyde decreased from 24.2 to 15.5 μg/m3 in the households of continuation and decreased from 29.7 to 13.6 μg/m3 in the households of withdrawal.”
Structure
- Factor
- Formaldehyde (CH₂O)
- Intervention
- Indoor plants (phytoremediation)
- Population
- asthmatics and their households
- Setting
- home, KR
- Study design
- quasi-experimental study in the homes of asthmatics in Korea over two observation terms: households of continuation kept the indoor plants for both terms, households of withdrawal kept them for the first term and passed the second without any plants; formaldehyde and benzene, toluene, ethylbenzene and xylene were measured indoors, with peak expiratory flow rate twice a day and an asthma-specific quality of life questionnaire, compared with the Mann-Whitney test (class 3)
- Effect
- mean
- Caveat
- the study says formaldehyde fell with passing time regardless of the plants, so the change cannot be read as an effect of the plants
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.