Evidence map›Paper›PMID 33901498›Full record

Observational studyChest2021

Clinical and Prognostic Impact of Low Diffusing Capacity for Carbon Monoxide Values in Patients With Global Initiative for Obstructive Lung Disease I COPD.

Juan P de-Torres, Denis E O'Donnell, Jose M Marín, Carlos Cabrera, Ciro Casanova, Marta Marín, Ana Ezponda, Borja G Cosio, Cristina Martinez, Ingrid Solanes and 4 more

Abstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Chest, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
–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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. The impact of body mass index on mortality in COPD: an updated dose-response meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2024
    Pooled it
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors.

Juan P de-TorresRespirology and Sleep Medicine Division, Queen's University, Kingston, Canada. Electronic address: jupa65@hotmail.com.
Denis E O'DonnellRespirology and Sleep Medicine Division, Queen's University, Kingston, Canada.
Jose M MarínPulmonary Department, Hospital Universitario Miguel Servet, Instituto Aragonés Ciencias Salud & CIBERES, Zaragoza, Spain.
Carlos CabreraPulmonary Department, Hospital Universitario Doctor Negrín, Las Palmas, Spain.
Ciro CasanovaPulmonary Department, Hospital Ntra Sra de Candelaria, Tenerife, Spain and Respiratory Research Unit, Hospital Ntra Sra de Candelaria, Tenerife, Spain.
Marta MarínPulmonary Department, Clínica Universidad de Navarra, Pamplona, Spain.
Ana EzpondaRadiology Department, Clínica Universidad de Navarra, Pamplona, Spain.
Borja G CosioHospital Universitario Son Espases, Instituto de Investigación Sanitaria de Baleares (IdISBa), Palma, Mallorca, Spain, and Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Madrid, España.
Cristina MartinezDepartment of Respiratory Medicine, Hospital Central de Asturias, Oviedo, Spain.
Ingrid SolanesPulmonary Department, Hospital Santa Creu i Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain.
Antonia FusterPulmonary Department, Hospital Universitario Son Llatzer, Palma de Mallorca, Spain.
J Alberto NederRespirology and Sleep Medicine Division, Queen's University, Kingston, Canada.
Jessica Gonzalez-GutierrezPulmonary Department, Hospital Universitari Arnau de Villanova, Lleida, Spain.
Bartolome R CelliPulmonary Department, Brigham and Women's Hospital, Boston, MA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Global Initiative for Obstructive Lung Disease (GOLD) does not promote diffusing capacity for carbon monoxide (Dlco) values in the evaluation of COPD. In GOLD spirometric stage I COPD patients, the clinical and prognostic impact of a low Dlco has not been explored. RESEARCH QUESTION: Could a Dlco threshold help define an increased risk of death and a different clinical presentation in these patients? STUDY DESIGN AND

methodsGOLD stage I COPD patients (n = 360) were enrolled and followed over 109 ± 50 months. Age, sex, pack-years' history, BMI, dyspnea, lung function measurements, exercise capacity, BODE index, and history of exacerbations were recorded. A cutoff value for Dlco was identified for all-cause mortality and the clinical and physiological characteristics of patients above and below the threshold compared. Cox regression analysis explored the predictive power of that cutoff value for all-cause mortality.

resultsA Dlco cutoff value of <60% predicted was associated with all-cause mortality (Dlco ≥ 60%: 9% vs Dlco < 60%: 23%, P = .01). At a same FEV

Indexed as

Exercise TolerancePulmonary Diffusing CapacityPulmonary Disease, Chronic ObstructiveSpirometryBody Mass IndexCanadaCarbon MonoxideFemaleHumansMaleMiddle AgedMortalityPatient AcuityPredictive Value of TestsPrognosisRisk AssessmentCarbon MonoxideclinicalCOPDDlcomortality

Identifiers

PMID33901498
PMCPMC8448999

What OpenQuestion holds

Textmetadata
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.