Cited by 101Asthma and respiratory diseasesChronic Obstructive Pulmonary Disease (COPD) ResearchOccupational exposure and asthma

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

Prevalence and management of severe asthma in primary care: an observational cohort study in Sweden (PACEHR)

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Abstract

BACKGROUND: Severe and uncontrolled asthma is associated with increased risk of exacerbations and death. A substantial proportion of asthma patients have poor asthma control, and a concurrent COPD diagnosis often increases disease burden. The objective of the study was to describe the prevalence and managemant of severe asthma in a Swedish asthma popuöation. METHODS: In this observational cohort study, primary care medical records data (2006-2013) from 36 primary health care centers were linked to data from national mandatory Swedish health registries. The studied population (>18 years) had a record of drug collection for obstructive pulmonary disease (ATC code R03) during 2011-2012, and a physician diagnosed asthma (ICD-10 code J45-J46) prior to drug collection. Severe asthma was classified as collection of high dose inhaled steroid (> 800 budesonide or equivalent per day) and leukotriene receptor antagonist and/or long-acting beta-agonist. Poor asthma control was defined as either collection of ≥600 doses of short-acting beta-agonists, and/or ≥1 exacerbation(s) during the year post index date. RESULTS: A total of 18,724 asthma patients (mean 49 years, 62.8% women) were included, of whom 17,934 (95.8%) had mild to moderate and 790 (4.2%) had severe asthma. Exacerbations were more prevalent in severe asthma (2.59 [2.41-2.79], Relative Risk [95% confidence interval]; p < 0.001). Poor asthma control was observed for 28.2% of the patients with mild to moderate asthma and for more than half (53.6%) of the patients with severe asthma (<0.001). Prior to index, one in five severe asthma patients had had a contact with secondary care and one third with primary care. A concurrent COPD diagnosis increased disease burden. CONCLUSION: Severe asthma was found in 4.2% of asthma patients in Sweden, more than half of them had poor asthma control, and most patients had no regular health care contacts.

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Crossref · 10.1186/s12931-018-0719-x

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Fig. 1 Study flow chart. Out of 49,408 patients with asthma (ICD10 code J45 or J46) who, during 2011 and 2012, collected respiratory drugs (ATC R03) from the pharmacy 18,724 fulfilled the inclusion criteria, i e were above the age of 18 years, had an asthma diagnosis prior to drug collection and did not have polymyalgia rheumatic or rheumatoid arthritis. Of these 18,724 patients, 790 were classified as having severe asthma and 17,934 as having mild to moderate asthma
Fig. 1 Study flow chart. Out of 49,408 patients with asthma (ICD10 code J45 or J46) who, during 2011 and 2012, collected respiratory drugs (ATC R03) from the pharmacy 18,724 fulfilled the inclusion criteria, i e were above the age of 18 years, had an asthma diagnosis prior to drug collection and did not have polymyalgia rheumatic or rheumatoid arthritis. Of these 18,724 patients, 790 were classified as having severe asthma and 17,934 as having mild to moderate asthmaCC BY · PubMed Central
Fig. 2 Poor asthma conttrol assessed by acute exacebations and the collection of more than 600 doses of short-acting beta-2 agonists the year after index date
Fig. 2 Poor asthma conttrol assessed by acute exacebations and the collection of more than 600 doses of short-acting beta-2 agonists the year after index dateCC BY · PubMed Central

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Metadata

Authors
Larsson, K., Ställberg, B., Lisspers, K., Telg, G., Johansson, G., Thuresson, M., & Janson, C.
Affiliations
  • Karolinska Institutet (SE)
  • Uppsala University (SE)
  • AstraZeneca (Sweden) (SE)
  • Statisticon (Sweden) (SE)
Corresponding author
Larsson, Kjell
Venue
Respiratory Research
Published
2018-01-18
Volume
19
Issue
1
Pages
12-12
ISSN
  • 1465-9921 (ISSN-L)
  • 1465-993X
OpenAlex
W2794020024
Cited by
100
References
27
Citations by year
2026: 7 · 2025: 9 · 2024: 8 · 2023: 8 · 2022: 13 · 2021: 13 · 2020: 26 · 2019: 12 · 2018: 4
FWCI
9.60
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Respiratory Research (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
AstraZeneca
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Asthma and respiratory diseases
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Occupational exposure and asthma
Keywords
severe asthma, asthma prevalence, asthma control, asthma exacerbations, COPD comorbidities, primary care, asthma management, inhaled corticosteroids, leukotriene receptor antagonists, long-acting beta2-agonists, short-acting beta2-agonists, health care utilization, disease burden
MeSH terms
Adult, Aged, Aged, 80 and over, Asthma, Female, Humans, Male, Middle Aged, Primary Health Care, Registries, Severity of Illness Index, Sweden, Cohort Studies, Prevalence, Anti-Asthmatic Agents, Disease Management

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