Evidence map›Paper›PMID 34016619›Full record

ArticleThe European respiratory journal2021

Chronic respiratory diseases are predictors of severe outcome in COVID-19 hospitalised patients: a nationwide study.

Guillaume Beltramo, Jonathan Cottenet, Anne-Sophie Mariet, Marjolaine Georges, Lionel Piroth, Pascale Tubert-Bitter, Philippe Bonniaud, Catherine Quantin

Open access · hybridAbstract read
In one paragraph

Article in The European respiratory journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
95citing papers in PubMed, 5 pooled it
8.2field-weighted citation impact, top 2% 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

95 citing papers in PubMed, 5 syntheses or guidelines pooled it, 155 citations in OpenAlex.

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  7. Real-world effectiveness of early remdesivir in reducing mortality among vulnerable patients hospitalized for COVID-19: Evidence for clinical pharmacists and inpatient care providers.American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists · 2026
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  9. Spatial downscaling of multivariate disease risk.International journal of health geographics · 2026
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35 more citing papers are in PubMed but not listed here.

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

8 authors at 3 institutions in 1 country.

Guillaume BeltramoReference Constitutive Center for Rare Lung Diseases, Dept of Pulmonary Medicine and Intensive Care Unit, University Hospital, Dijon, France.ORCID 0000-0003-2830-5642
Jonathan CottenetUniversity of Bourgogne-Franche-Comté, Dijon, France.
Anne-Sophie MarietUniversity of Bourgogne-Franche-Comté, Dijon, France.
Marjolaine GeorgesReference Constitutive Center for Rare Lung Diseases, Dept of Pulmonary Medicine and Intensive Care Unit, University Hospital, Dijon, France.
Lionel PirothUniversity of Bourgogne-Franche-Comté, Dijon, France.
Pascale Tubert-BitterUniversité Paris-Saclay, UVSQ, Université Paris-Sud, Inserm, High-Dimensional Biostatistics for Drug Safety and Genomics, CESP, Villejuif, France.
Philippe BonniaudReference Constitutive Center for Rare Lung Diseases, Dept of Pulmonary Medicine and Intensive Care Unit, University Hospital, Dijon, France philippe.bonniaud@chu-dijon.fr.
Catherine QuantinUniversity of Bourgogne-Franche-Comté, Dijon, France.
Inserm · FRUniversité Bourgogne Franche-Comté · FRUniversité Paris-Sud · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInfluenza epidemics were initially considered to be a suitable model for the COVID-19 epidemic, but there is a lack of data concerning patients with chronic respiratory diseases (CRDs), who were supposed to be at risk of severe forms of COVID-19.

methodsThis nationwide retrospective cohort study describes patients with prior lung disease hospitalised for COVID-19 (March-April 2020) or influenza (2018-2019 influenza outbreak). We compared the resulting pulmonary complications, need for intensive care and in-hospital mortality depending on respiratory history and virus.

resultsIn the 89 530 COVID-19 cases, 16.03% had at least one CRD, which was significantly less frequently than in the 45 819 seasonal influenza patients. Patients suffering from chronic respiratory failure, chronic obstructive pulmonary disease, asthma, cystic fibrosis and pulmonary hypertension were under-represented, contrary to those with lung cancer, sleep apnoea, emphysema and interstitial lung diseases. COVID-19 patients with CRDs developed significantly more ventilator-associated pneumonia and pulmonary embolism than influenza patients. They needed intensive care significantly more often and had a higher mortality rate (except for asthma) when compared with patients with COVID-19 but without CRDs or patients with influenza.

conclusionsPatients with prior respiratory diseases were globally less likely to be hospitalised for COVID-19 than for influenza, but were at higher risk of developing severe COVID-19 and had a higher mortality rate compared with influenza patients and patients without a history of respiratory illness.

Indexed as

COVID-19Influenza, HumanHospital MortalityHumansRetrospective StudiesSARS-CoV-2

Identifiers

PMID34016619
PMCPMC8135927
OpenAlexW3163672671

What Socratic 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 Socratic graph.