Evidence map›Paper›PMID 35430944›Full record

ArticleTherapeutic advances in respiratory disease

Uncontrolled asthma predicts severe COVID-19: a report from the Swedish National Airway Register.

Johanna Karlsson Sundbaum, Jon R Konradsen, Lowie E G W Vanfleteren, Sten Axelsson Fisk, Christophe Pedroletti, Yvonne Sjöö, Jörgen Syk, Therese Sterner, Anne Lindberg, Alf Tunsäter and 3 more

Open access · goldAbstract read
In one paragraph

Article in Therapeutic advances in respiratory disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

14 citing papers in PubMed, 16 citations in OpenAlex.

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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

13 authors at 8 institutions in 1 country.

Johanna Karlsson SundbaumDepartment of Health, Education and Technology, Luleå University of Technology, 97187 Luleå, Sweden.ORCID 0000-0001-5313-7981
Jon R KonradsenDepartment of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
Lowie E G W VanfleterenCOPD Center, Department of Respiratory Medicine and Allergology, Sahlgrenska University Hospital, Gothenburg, Sweden.
Sten Axelsson FiskDepartment of Clinical Sciences Lund, Obstetrics and Gynaecology, Lund University and Ystad Hospital, Lund, Sweden.
Christophe PedrolettiDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Yvonne SjööThe Swedish National Airway Register, Gothenburg, Sweden.
Jörgen SykDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Therese SternerDepartment of Occupational and Environmental Dermatology, Skåne University Hospital, Lund University, Malmö, Sweden.
Anne LindbergDepartment of Public Health and Clinical Medicine, Umeå University, Devision of Medicine/ The OLIN- unit, Umeå University, Umeå, Sweden.
Alf TunsäterDepartment of Respiratory Medicine and Allergology, Skåne University Hospital, Lund University, Lund, Sweden.
Fredrik NybergSchool of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Ann Ekberg-JanssonCOPD Center, Department of Respiratory Medicine and Allergology, Sahlgrenska University Hospital, Gothenburg, Sweden.
Caroline StridsmanDepartment of Public Health and Clinical Medicine, Umeå University, Devision of Medicine/ The OLIN- unit, Umeå University, Umeå, Sweden.ORCID 0000-0001-6622-3838
Lund University · SESahlgrenska University Hospital · SEUmeå University · SEUppsala University · SEKarolinska Institutet · SELuleå University of Technology · SESwedish National Heritage Board · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSevere asthma increases the risk of severe COVID-19 outcomes such as hospitalization and death. However, more studies are needed to understand the association between asthma and severe COVID-19.

methodsA cohort of 150,430 adult asthma patients were identified in the Swedish National Airway Register (SNAR) from 2013 to December 2020. Data on body mass index, smoking habits, lung function, and asthma control test (ACT) were obtained from SNAR, and uncontrolled asthma was defined as ACT ⩽19. Patients with severe COVID-19 were identified following hospitalization or in death certificates based on ICD-10 codes U07.1 and U07.2. The Swedish Prescribed Drug register was used to identify comorbidities and data from Statistics Sweden for educational level. Multivariate logistic regression analyses were used to estimate associations with severe COVID-19.

resultsSevere COVID-19 was identified in 1067 patients (0.7%). Older age (OR = 1.04, 95% CI = 1.03-1.04), male sex (1.42, 1.25-1.61), overweight (1.56, 1.27-1.91), obesity (2.12, 1.73-2.60), high-dose inhaled corticosteroids in combination with long-acting β-agonists (1.40, 1.22-1.60), dispensed oral corticosteroids ⩾2 (1.48, 1.25-1.75), uncontrolled asthma (1.64, 1.35-2.00), cardiovascular disease (1.20, 1.03-1.40), depression (1.47, 1.28-1.68), and diabetes (1.52, 1.29-1.78) were associated with severe COVID-19, while current smoking was inversely associated (0.63, 0.47-0.85). When comparing patients who died from COVID-19 with those discharged alive from hospital until 31 December 2020, older age, male sex, and current smoking were associated with COVID-19 death.

conclusionPatients with uncontrolled asthma and high disease burden, including increased asthma medication intensity, should be identified as risk patients for severe COVID-19. Furthermore, current smoking is strongly associated with COVID-19 death in asthma.

Indexed as

AsthmaCOVID-19Adrenal Cortex HormonesAdultHospitalizationHumansMaleSwedenAdrenal Cortex Hormonesasthmaasthma treatmentCOVID-19hospitalizationmortalityquality registerregister studies

Identifiers

PMID35430944
PMCPMC9019327
OpenAlexW4224310961

What OpenQuestion holds

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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.