Evidence map›Paper›PMID 32419719›Full record

ArticleBuilding and environment2020

Effects of air cleaners and school characteristics on classroom concentrations of particulate matter in 34 elementary schools in Korea.

Ju-Hyeong Park, Tae Jung Lee, Mi Jeong Park, Hyung Na Oh, Young Min Jo

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Building and environment, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Development of air purifier operation guidelines using grey box models for the concentrations of particulate matter in elementary school classrooms.Aerosol science and technology : the journal of the American Association for Aerosol Research · 2023
    Article
  6. Effectiveness of a Protocol to Reduce Children's Exposure to Particulate Matter and NOInternational journal of environmental research and public health · 2022
    Article
  7. Article
  8. Negative Ion Purifier Effects on Indoor Particulate Dosage to Small Airways.International journal of environmental research and public health · 2021
    Article
  9. Article
  10. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Ju-Hyeong ParkRespiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, WV, USA.
Tae Jung LeeDepartment of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, Yong-In, Gyung-Gi Do, South Korea.
Mi Jeong ParkDepartment of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, Yong-In, Gyung-Gi Do, South Korea.
Hyung Na OhCollege of International Studies, Kyung Hee University, Yong-In, Gyung-Gi Do, South Korea.
Young Min JoDepartment of Environmental Science and Environmental Engineering, College of Engineering, Kyung Hee University, Yong-In, Gyung-Gi Do, South Korea.

Funding

Intramural CDC HHS CC999999
6 · The paper itself

Abstract

Exposure to particulate matter (PM) in school environments has been associated with respiratory illnesses among children. Although using air cleaners was reported to reduce PM exposure and improve residents' health in homes, their effects in classrooms are not well understood. We examined how the use of air cleaners in classrooms and school/classroom characteristics affect the levels of indoor PM. Our environmental study included 102 classrooms from 34 elementary schools located on the mainland peninsula and an island in Korea. Indoor and outdoor PM were monitored simultaneously with portable aerosol spectrometers, and indoor gravimetric PM levels were measured with low volume, size-selective samplers during the class hours. Correlations among PM measurements were computed and final multiple regression models for indoor PM were constructed with a model building procedure. Correlation between indoor and outdoor PM

Indexed as

Air cleanerClassroomCleaningParticulate matterSchool

Identifiers

PMID32419719
PMCPMC7226911

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.