Evidence map›Paper›PMID 40045313›Full record

ArticleRespiratory research2025

Disproportionately raised risk of adverse outcomes in patients with COPD and comorbid type 2 diabetes or depression: Swedish register-based cohort study.

Carolina Smith, Mikael Hasselgren, Hanna Sandelowsky, Björn Ställberg, Ayako Hiyoshi, Scott Montgomery

Abstract read
In one paragraph

Article in Respiratory research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Heart failure readmissions in urban and rural hospital settings: An analysis of 30-day readmissions using the 2021 Nationwide Readmissions Database.The Journal of rural health : official journal of the American Rural Health Association and the National Rural Health Care Association · 2026
    Article
  6. Review
  7. Optimizing COPD Care in Belgium: A Multidisciplinary Expert Consensus on Cardiopulmonary Risk Management.International journal of chronic obstructive pulmonary disease · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
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.

Carolina SmithClinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden. Carolina.smith@oru.se.
Mikael HasselgrenCentre for Clinical Research and Education, Region Värmland, Karlstad, Sweden.
Hanna SandelowskyDepartment of Neurobiology, Care Sciences and Society, Division of Family Medicine and Primary Care, Karolinska Institutet, Stockholm, Sweden.
Björn StällbergDepartment of Public Health and Caring Sciences, Family Medicine and Preventive Medicine, Uppsala University, Uppsala, Sweden.
Ayako Hiyoshi *Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Scott Montgomery *Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe aimed to examine if patients with COPD and comorbid type 2 diabetes, or COPD with comorbid depression or anxiety, had disproportionally raised excess risks of subsequent cardiovascular disease and mortality.

methodsThis general population-based cohort study used data from Swedish national registers, with follow-up during 2005-2018. Cox regression estimated risks of cardiovascular disease or mortality, producing hazard ratios (HR) with (95% confidence intervals). Interaction testing quantified disproportionally increased excess risks.

resultsAmong 5,624,306 individuals, 332,549 had a COPD diagnosis. Compared with individuals who did not have COPD or type 2 diabetes, all-cause mortality risk was higher for individuals who had either COPD or type 2 diabetes, with HR 2.68 (2.66-2.69) and 1.70 (1.69-1.71), respectively. Having both conditions produced an HR of 3.72 (3.68-3.76). Among cardiovascular outcomes, the highest risks were found for chronic heart failure: COPD only, HR 2.87 (2.84-2.90); type 2 diabetes only, 1.86 (1.84-1.88); and both, 4.55 (4.46-4.64). Having both COPD and type 2 diabetes was associated with disproportionally higher excess risks than expected from the sum of the individual diseases, except for cerebrovascular disease or ischemic heart disease. For COPD and depression/anxiety, all-cause mortality risk was associated with COPD only, HR 2.74 (2.72-2.76); depression/anxiety only, 2.39 (2.38-2.40); and both 4.72 (4.68-4.75). Chronic heart failure was associated with COPD only, HR 2.74 (2.71-2.78); depression/anxiety only, 1.31 (1.30-1.32); and both, 3.45 (3.40-3.50). This disease combination was associated with disproportionally higher excess risks than expected, except for atrial fibrillation.

conclusionsType 2 diabetes or depression/anxiety in COPD patients were associated with disproportionally excess risks for cardiovascular disease and mortality. It is important for clinicians to be aware of these greater than expected risks, to prevent further cardiovascular morbidity and mortality.

Indexed as

Cardiovascular DiseasesDepressionDiabetes Mellitus, Type 2Pulmonary Disease, Chronic ObstructiveRegistriesAdultAgedCohort StudiesComorbidityFemaleFollow-Up StudiesHumansMaleMiddle AgedRisk AssessmentRisk FactorsCardiovascular diseaseCOPDDepressionMortalityType 2 diabetes

Identifiers

PMID40045313
PMCPMC11883964

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LicenceCC BY
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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.