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

Finding F-1226

“Peak expiratory flow rate (PEFR) increased in the households of continuation with the value of 13.9 L/min in the morning and 20.6 L/ min in the evening, but decreased in the households of withdrawal with the value of -24.7 L/min in the morning and -30.2 L/min in the evening in the first experimental season.”

House-plant placement for indoor air purification and health benefits on asthmatics… (2014). Environmental health and toxicology. Page 1. CKB 6935

Structure

Outcome
Lung function
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
difference 24.7
Caveat
the changes are printed as negative and the estimates are recorded as their size with the direction in its own field; a change within the group, not a difference against the other group

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.