Evidence map›Paper›PMID 37797964›Full record

ArticleBMJ open respiratory research2023

Comorbidities and mortality among patients with chronic obstructive pulmonary disease.

Nils Skajaa, Kristina Laugesen, Erzsébet Horváth-Puhó, Henrik Toft Sørensen

Open access · goldAbstract read
In one paragraph

Article in BMJ open respiratory research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
5.4field-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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

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  13. A Narrative Review of the Correlation Between Comorbidity and Acute Exacerbation of COPD Patients.International journal of chronic obstructive pulmonary disease · 2026
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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

4 authors at 1 institution in 1 country.

Nils SkajaaDepartment of Clinical Epidemiology, Aarhus University and Aarhus University Hospital, Aarhus, Denmark nilsskajaa@clin.au.dk.ORCID 0000-0001-8351-7133
Kristina LaugesenDepartment of Clinical Epidemiology, Aarhus University and Aarhus University Hospital, Aarhus, Denmark.
Erzsébet Horváth-PuhóDepartment of Clinical Epidemiology, Aarhus University and Aarhus University Hospital, Aarhus, Denmark.
Henrik Toft SørensenDepartment of Clinical Epidemiology, Aarhus University and Aarhus University Hospital, Aarhus, Denmark.
Aarhus University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionComorbidities are common in patients with chronic obstructive pulmonary disease (COPD). Estimates of prevalence, incidence and prognostic impact of comorbidities provide foundational knowledge of COPD epidemiology. We examined the prevalence, incidence and prognostic impact of 21 comorbidities among patients with COPD compared with the Danish general population.

methodsWe conducted a nationwide, population-based cohort study based on longitudinal Danish registry data, covering all Danish hospitals (2010-2021). The cohorts comprised 142 973 patients with a first-time hospital-based diagnosis of COPD and 428 917 age-matched and sex-matched comparators from the general population. During follow-up, we estimated the 5-year risk and risk difference, using competing risk methods when applicable.

resultsAt time of diagnosis, the comorbidities with the highest prevalence were mood, stress-related or anxiety disorders (25.2% for patients with COPD vs 13.1% for comparators), osteoporosis/hip fractures (17.4% vs 9.9%), diabetes (15.6% vs 10.5%), peripheral arterial disease (13.5% vs 4.9%) and heart failure (13.3% vs 4.0%). During follow-up, the risk of most incident comorbidities was markedly elevated among patients with COPD. The five comorbidities associated with the highest 5-year absolute risk difference with respect to the risk in the general population were mood, stress-related or anxiety disorders (5.7%), osteoporosis/hip fractures (5.6%), heart failure (4.2%), smoking-related cancers (2.8%) and peripheral arterial disease (2.7%). The 5-year mortality risk was 43% vs 17.7%. Among patients with COPD, the 5-year mortality risk markedly increased with the number of comorbidities present.

conclusionsOur population-based findings underscore the importance of considering comorbidities in the management of COPD.

Indexed as

Heart FailureHip FracturesOsteoporosisPeripheral Arterial DiseasePulmonary Disease, Chronic ObstructiveCohort StudiesHumansCOPD epidemiology

Identifiers

PMID37797964
PMCPMC10551998
OpenAlexW4387371959

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.