Evidence map›Paper›PMID 24587955›Full record

ArticleAllergy, asthma & immunology research2014

Reference values and determinants of fractional concentration of exhaled nitric oxide in healthy children.

Hyun-Ju Cho, Young-Ho Jung, Song-I Yang, Eun Lee, Hyung Young Kim, Ju-Hee Seo, Ji-Won Kwon, Byoung-Ju Kim, Hyo-Bin Kim, So-Yeon Lee and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Allergy, asthma & immunology research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.1field-weighted citation impact, top 14% of its field
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

13 citing papers in PubMed, 21 citations in OpenAlex.

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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

15 authors at 6 institutions in 1 country.

Hyun-Ju ChoDepartment of Pediatrics, Childhood Asthma Atopy Center, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea.
Young-Ho JungDepartment of Pediatrics, CHA University School of Medicine, Seongnam, Korea. ; Research Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Song-I YangDepartment of Pediatrics, Childhood Asthma Atopy Center, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea. ; Research Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Eun LeeDepartment of Pediatrics, Childhood Asthma Atopy Center, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea. ; Research Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Hyung Young KimResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea.
Ju-Hee SeoResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Korea Cancer Center Hospital, Seoul, Korea.
Ji-Won KwonResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea.
Byoung-Ju KimResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea.
Hyo-Bin KimResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
So-Yeon LeeResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Hallym Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
Dae Jin SongResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea.
Woo Kyung KimResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea.
Gwang Cheon JangResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, National Health Insurance Corporation Ilsan Hospital, Seoul, Korea.
Jung Yeon ShimResearch Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ; Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
Soo-Jong HongDepartment of Pediatrics, Childhood Asthma Atopy Center, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea. ; Research Center for Standardization of Allergic Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Ulsan College · KRUniversity of Ulsan · KRAsan Medical Center · KRKosin University Gospel Hospital · KRInje University Seoul Paik Hospital · KRKorea University Medical Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMeasurement of the fractional concentration of exhaled nitric oxide (FeNO) is a quantitative, noninvasive, simple, safe method of assessing airway inflammation. While FeNO measurement has been standardized, reference values for elementary school children are scarce. The aim of this study was to establish reference values for FeNO in children.

methodsFeNO was measured in elementary school children at 6-12 years of age in Seoul, Korea, following American Thoracic Society guidelines and using a chemiluminescence analyzer (NIOX Exhaled Nitric Oxide Monitoring System, Aerocrine, Sweden). A total of 1,252 children completed a modified International Study of Asthma and Allergy in Children (ISAAC) questionnaire; FeNO was measured in 1,063 children according to the protocol and in 808 children defined as healthy controls.

resultsMean FeNO were 10.32 ppb, 16.58 ppb, and 12.36 ppb in non-atopic, atopic, and all 808 healthy controls, respectively. FeNO was not associated with age and gender. The FeNO reference equations were determined by multiple linear regression analysis, taking into account the variables of age, height, weight, total IgE, eosinophil percent, and bronchial hyper-responsiveness (methacholine PC20). FeNO=0.776+0.003×total IgE+0.340×eosinophil percent; coefficient of determination (R2)=0.084 in the 501 healthy non-atopic controls. FeNO=-18.365+1.536×eosinophil percent, R2=0.183 in the 307 healthy atopic controls; and FeNO=-7.888+0.130×Height+0.004×total IgE+1.233×eosinophil percent, R2=0.209 in the 808 all healthy controls. Eosinophil percent was correlated with FeNO in all healthy controls. FeNO was not associated with BMI.

conclusionThis study provides reference values for FeNO that can be used to evaluate airway inflammation in elementary school children. Determinants that could most accurately predict FeNO in healthy school-age children were assessed.

Indexed as

childrendeterminantsFeNOhealthyreference value

Identifiers

PMID24587955
PMCPMC3936047
OpenAlexW1990656321

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.