Evidence map›Paper›PMID 33953554›Full record

ArticleInternational journal of chronic obstructive pulmonary disease

The Relation Between Clinical Phenotypes, GOLD Groups/Stages and Mortality in COPD Patients - A Prospective Multicenter Study.

Kristian Brat, Michal Svoboda, Jaromir Zatloukal, Marek Plutinsky, Eva Volakova, Patrice Popelkova, Barbora Novotna, Tomas Dvorak, Vladimir Koblizek

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in International journal of chronic obstructive pulmonary disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 28% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. RETRO-POPE: A Retrospective, Multicenter, Real-World Study of All-Cause Mortality in COPD.International journal of chronic obstructive pulmonary disease · 2023
    Article
  4. Article
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 1 country.

Kristian BratDepartment of Respiratory Diseases, University Hospital Brno, Brno, Czech Republic.ORCID 0000-0003-1674-228X
Michal SvobodaFaculty of Medicine, Masaryk University, Brno, Czech Republic.
Jaromir ZatloukalPulmonary Department, University Hospital Olomouc, Olomouc, Czech Republic.
Marek PlutinskyDepartment of Respiratory Diseases, University Hospital Brno, Brno, Czech Republic.
Eva VolakovaPulmonary Department, University Hospital Olomouc, Olomouc, Czech Republic.ORCID 0000-0002-6388-8022
Patrice PopelkovaPulmonary Department, University Hospital Ostrava, Ostrava, Czech Republic.ORCID 0000-0001-6572-4702
Barbora NovotnaPulmonary Department, Bulovka Hospital, Prague, Czech Republic.ORCID 0000-0002-8646-0782
Tomas DvorakPulmonary Department, Mlada Boleslav Hospital, Mlada Boleslav, Czech Republic.
Vladimir KoblizekPulmonary Department, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic.ORCID 0000-0002-2446-2790
Masaryk University · CZUniversity Hospital Olomouc · CZCharles University · CZFakultní nemocnice Bulovka · CZUniversity of Ostrava · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe concept of phenotyping emerged, reflecting specific clinical, pulmonary and extrapulmonary features of each particular chronic obstructive pulmonary disease (COPD) case. Our aim was to analyze prognostic utility of: "Czech" COPD phenotypes and their most frequent combinations, "Spanish" phenotypes and Global Initiative for Chronic Obstructive Lung Disease (GOLD) stages + groups in relation to long-term mortality risk.

methodsData were extracted from the Czech Multicenter Research Database (CMRD) of COPD. Kaplan-Meier (KM) estimates (at 60 months from inclusion) were used for mortality assessment. Survival rates were calculated for the six elementary "Czech" phenotypes and their most frequent and relevant combinations, "Spanish" phenotypes, GOLD grades and groups. Statistically significant differences were tested by Log Rank test. An analysis of factors underlying mortality risk (the role of confounders) has been assessed with the use of classification and regression tree (CART) analysis. Basic factors showing significant differences between deceased and living patients were entered into the CART model. This showed six different risk groups, the differences in risk were tested by a Log Rank test.

resultsThe cohort (n=720) was 73.1% men, with a mean age of 66.6 years and mean FEV

conclusionCertain phenotypes ("Czech" or "Spanish") of COPD are associated with higher risk of death. Co-presence of multiple phenotypes (emphysematous plus cachectic plus frequent exacerbator) in a single individual was associated with amplified risk of mortality.

Indexed as

Bronchitis, ChronicPulmonary Disease, Chronic ObstructiveAgedDisease ProgressionFemaleHumansMalePhenotypeProspective StudiesSpainchronic obstructive pulmonary disease; COPDclassification and regression tree; CARTclustermortalityphenotypes

Identifiers

PMID33953554
PMCPMC8089082
OpenAlexW3158618987

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.