Evidence map›Paper›PMID 34181689›Full record

Trial reportPloS one2021

Precision and accuracy of FEV1 measurements from the Vitalograph copd-6 mini-spirometer in a healthy Ugandan population.

Wajd Abbas Hassan Hansen, Vivi Schlünssen, Erik Jørs, Daniel Sekabojja, John C Ssempebwa, Ruth Mubeezi, Philipp Staudacher, Samuel Fuhrimann, Martin Rune Hassan Hansen

Open access · goldAbstract readClinical Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed, 1 pooled it
0.3field-weighted citation impact, top 41% 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

1 citing paper in PubMed, 1 synthesis or guideline pooled it, 2 citations in OpenAlex.

  1. Pooled it
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

9 authors at 5 institutions in 4 countries.

Wajd Abbas Hassan HansenLægerne i Hirtshals APS, Hirtshals, Denmark.
Vivi SchlünssenResearch Unit for Environment, Work and Health, Danish Ramazzini Center, Department of Public Health, Aarhus University, Aarhus, Denmark.
Erik JørsDepartment of Occupational and Environmental Medicine, Odense University Hospital, Odense, Denmark.
Daniel SekabojjaUganda National Association of Community and Occupational Health, Kampala, Uganda.ORCID 0000-0001-8444-778X
John C SsempebwaSchool of Public Health, Makerere University, Kampala, Uganda.
Ruth MubeeziSchool of Public Health, Makerere University, Kampala, Uganda.
Philipp StaudacherEawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.
Samuel FuhrimannInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, Netherlands.
Martin Rune Hassan HansenResearch Unit for Environment, Work and Health, Danish Ramazzini Center, Department of Public Health, Aarhus University, Aarhus, Denmark.ORCID 0000-0001-9681-2393
Aarhus University · DKMakerere University · UGETH Zurich · CHUniversity of Southern Denmark · DKUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveEvaluate the accuracy and precision of the copd-6 mini-spirometer for FEV1 in a rural Ugandan population.

methodsIn a cross-sectional study, 171 smallholder farmers performed spirometry with copd-6, and a diagnostic-quality spirometer. RESULTS AND DISCUSSION: The copd-6 underestimated FEV1 at low flows and overestimated FEV1 at high flows. Across all participants, the device slightly overestimated FEV1 by 0.04 [0.02; 0.06] L. Calibration data showed similar patterns.

conclusionThe copd-6 could be considered as an affordable tool for research on lung function impairment in resource-constrained settings. However, further validation in a study population with obstructive lung disease is needed.

Indexed as

AdultFemaleForced Expiratory VolumeHumansMaleMiddle AgedPulmonary Disease, Chronic ObstructiveSpirometryUganda

Identifiers

PMID34181689
PMCPMC8238209
OpenAlexW3175592282

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.