Evidence map›Paper›PMID 25875204›Full record

SynthesisPloS one2015

Excess costs of comorbidities in chronic obstructive pulmonary disease: a systematic review.

Manuel B Huber, Margarethe E Wacker, Claus F Vogelmeier, Reiner Leidl

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 3 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

24 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Economic Burden of Chronic Obstructive Pulmonary Disease (COPD): A Systematic Literature Review.International journal of chronic obstructive pulmonary disease · 2020
    Pooled it
  3. Pooled it
  4. Review
  5. 20-year trends in excess costs of COPD.The European respiratory journal · 2025
    Article
  6. Article
  7. Article
  8. Observational
  9. Article
  10. Article
  11. Review
  12. Multi-morbidities are Not a Driving Factor for an Increase of COPD-Related 30-Day Readmission Risk.International journal of chronic obstructive pulmonary disease · 2020
    Observational
  13. Trends in Hospitalization Expenditures for Acute Exacerbations of COPD in Beijing from 2009 to 2017.International journal of chronic obstructive pulmonary disease · 2020
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Observational
  19. Article
  20. Economic burden of COPD in a Swedish cohort: the ARCTIC study.International journal of chronic obstructive pulmonary disease · 2018
    Observational
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.

Manuel B HuberInstitute of Health Economics and Health Care Management, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Neuherberg, Germany.
Margarethe E WackerInstitute of Health Economics and Health Care Management, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Neuherberg, Germany.
Claus F VogelmeierDepartment of Medicine, Pulmonary and Critical Care Medicine, Philipps-Universität Marburg, University Medical Centre Giessen and Marburg (UGMLC), Member of the German Center for Lung Research (DZL), Marburg, Germany.
Reiner LeidlInstitute of Health Economics and Health Care Management, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Neuherberg, Germany; Munich Center of Health Sciences, Ludwig-Maximilians-Universität, Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality worldwide. Comorbidities are often reported in patients with COPD and may influence the cost of care. Yet, the extent by which comorbidities affect costs remains to be determined.

objectivesTo review, quantify and evaluate excess costs of comorbidities in COPD.

methodsUsing a systematic review approach, Pubmed and Embase were searched for studies analyzing excess costs of comorbidities in COPD. Resulting studies were evaluated according to study characteristics, comorbidity measurement and cost indicators. Mark-up factors were calculated for respective excess costs. Furthermore, a checklist of quality criteria was applied.

resultsTwelve studies were included. Nine evaluated comorbidity specific costs; three examined index-based results. Pneumonia, cardiovascular disease and diabetes were associated with the highest excess costs. The mark-up factors for respective excess costs ranged between 1.5 and 2.5 in the majority of cases. On average the factors constituted a doubling of respective costs in the comorbid case. The main cost driver, among all studies, was inpatient cost. Indirect costs were not accounted for by the majority of studies. Study heterogeneity was high.

conclusionsThe reviewed studies clearly show that comorbidities are associated with significant excess costs in COPD. The inclusion of comorbid costs and effects in future health economic evaluations of preventive or therapeutic COPD interventions seems highly advisable.

Indexed as

Health Care CostsComorbidityFemaleHumansMaleMortalityPulmonary Disease, Chronic ObstructiveRisk Factors

Identifiers

PMID25875204
PMCPMC4405814

What OpenQuestion holds

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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.