Evidence map›Paper›PMID 28982773›Full record

ArticleThe European respiratory journal2017

Inter-test reproducibility of the lung clearance index measured by multiple breath washout.

Esther Oude Engberink, Felix Ratjen, Stephanie D Davis, George Retsch-Bogart, Reshma Amin, Sanja Stanojevic

Open access · bronzeAbstract read
In one paragraph

Article in The European respiratory journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

21 citing papers in PubMed, 72 citations in OpenAlex.

  1. Observational
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  6. Modulator Therapy in Cystic Fibrosis Patients withJournal of personalized medicine · 2022
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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

6 authors at 5 institutions in 3 countries.

Esther Oude EngberinkDivision of Respiratory Medicine, Dept of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada.
Felix RatjenDivision of Respiratory Medicine, Dept of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada.
Stephanie D DavisSection of Pediatric Pulmonology, Allergy and Sleep Medicine, Dept of Pediatrics, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN, USA.
George Retsch-BogartDivision of Pediatric Pulmonology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Reshma AminDivision of Respiratory Medicine, Dept of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada.
Sanja StanojevicDivision of Respiratory Medicine, Dept of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada Sanja.Stanojevic@SickKids.ca.
Hospital for Sick Children · CARadboud University Medical Center · NLRiley Hospital for Children · USUniversity of North Carolina at Chapel Hill · USUniversity of Toronto · CA

Funding

The Lung Clearance Index as a Marker of Early Lung Disease in Preschool ChildrenR01HL116232 · NHLBI · HOSPITAL FOR SICK CHLDRN (TORONTO) · PI RATJEN, FELIX · 2012 to 2015
$1.6M
NHLBI NIH HHS R01 HL116232
6 · The paper itself

Abstract

The lung clearance index (LCI) has strong intra-test repeatability; however, the inter-test reproducibility of the LCI is poorly defined.The aim of the present study was to define a physiologically meaningful change in LCI in preschool children, which discriminates changes associated with disease progression from biological variability.Repeated LCI measurements from a longitudinal cohort study of children with cystic fibrosis and age-matched controls were collected to define the inter-visit reproducibility of the LCI. Absolute change, the coefficient of variation, Bland-Altman limits of agreement, the coefficient of repeatability, intra-class correlation coefficient, and percentage changes were calculated.LCI measurements (n=505) from 71 healthy and 77 cystic fibrosis participants (aged 2.6-6 years) were analysed. LCI variability was proportional to its magnitude, such that reproducibility defined by absolute changes is biased. A physiologically relevant change for quarterly LCI measurements in health was defined as exceeding ±15%. In clinically stable cystic fibrosis participants, the threshold was higher (±25%); however, for measurements made 24 h apart, the threshold was similar to that observed in health (±17%).A percentage change in LCI greater than ±15% in preschool children can be considered physiologically relevant and greater than the biological variability of the test.

Indexed as

Cystic FibrosisMucociliary ClearanceBreath TestsChild, PreschoolDisease ProgressionFemaleHumansMalePatient AcuityPrognosisReproducibility of Results

Identifiers

PMID28982773
PMCPMC5898949
OpenAlexW2764203291

What OpenQuestion holds

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LicenceCC BY-NC
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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.