Evidence map›Paper›PMID 24920949›Full record

ArticleTuberculosis and respiratory diseases2014

Influence of environmental exposures on patients with chronic obstructive pulmonary disease in Korea.

Yoonki Hong, Myoung Nam Lim, Woo Jin Kim, Chin Kook Rhee, Kwang Ha Yoo, Ji-Hyun Lee, Ho Il Yoon, Tae-Hyung Kim, Jin Hwa Lee, Seong Yong Lim and 2 more

Abstract read
In one paragraph

Article in Tuberculosis and respiratory diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Review
  3. Observational
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

12 authors.

Yoonki HongDepartment of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea.
Myoung Nam LimDepartment of Respiratory Center, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea.
Woo Jin KimDepartment of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea.
Chin Kook RheeDepartment of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
Kwang Ha YooDepartment of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea.
Ji-Hyun LeeDepartment of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
Ho Il YoonDepartment of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
Tae-Hyung KimDivision of Pulmonology, Department of Internal Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea.
Jin Hwa LeeDepartment of Internal Medicine, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul, Korea.
Seong Yong LimDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
Sang Do LeeDepartment of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Yeon-Mok OhDepartment of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic obstructive pulmonary disease (COPD) is characterized by airflow limitation and results from environmental factors and genetic factors. Although cigarette smoking is a major risk factor, other environmental exposures can influence COPD. The purpose of this study is to investigate the clinical characteristics of COPD according to the history of environmental exposure.

methodsThe study population comprised of 347 subjects with COPD who were recruited from the pulmonary clinics of 14 hospitals within the Korean Obstructive Lung Disease Study Group. We classified environmental exposures according to history of living near factory, and direct exposure history to firewood or briquette. According to living environmental exposures, we compared the frequency of respiratory symptoms, pulmonary function, quality of life, exercise capacity, and computed tomography phenotypes.

resultsThirty-one subjects (8.9%) had history of living near factory, 271 (78.3%) had exposure history to briquette, and 184 (53.3%) had exposure history to firewood. Patients with history of living near a factory had a significantly longer duration of sputum, while patients with exposure to firewood tended to have lower forced expiratory volume in one second, and patients with exposure to briquette tended to have lower six minute walk distance.

conclusionCOPD subjects with the history of living near factory had more frequent respiratory symptoms such as sputum. Our data suggest that environmental exposure may influence clinical phenotype of COPD.

Indexed as

Air PollutantsEnvironmental ExposureFossil FuelsOccupational ExposurePulmonary Disease, Chronic Obstructive

Identifiers

PMID24920949
PMCPMC4050070

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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.