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BMC Primary Care
Published in: BMC Primary Care 1/2014

Open Access 01-12-2014 | Research article

Medication prescribing for asthma and COPD: a register-based cross-sectional study in Swedish primary care

Authors: Paolina Weidinger, J Lars G Nilsson, Ulf Lindblad

Published in: BMC Primary Care | Issue 1/2014

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Abstract

Background

There is a gap between prescribed asthma medication and diagnosed asthma in children and adolescents. However, few studies have explored this issue among adults, where asthma medication is also used for the treatment of chronic obstructive pulmonary disease (COPD). The aim of this study was to examine the relationship between prescribing of medications indicated for asthma and COPD and the recorded diagnosis for these conditions.

Method

In a register-based study, individuals prescribed a medication indicated for asthma and COPD during 2004-2005 (Group A; n = 14 101) and patients with diagnoses of asthma or COPD recorded during 2000-2005 (Group B; n = 12 328) were identified from primary health care centers in Skaraborg, Sweden. From a 5% random sample of the medication users (n = 670), the written medical records were accessed. Primary outcomes: prevalence of medication and diagnoses, reasons for prescription. Secondary outcomes: type and number of prescribed drugs and performance of peak expiratory flow or spirometry.

Results

Medications indicated for asthma and COPD was prescribed to 5.6% of the population in primary care (n = 14 101). Among them, an asthma diagnosis was recorded for 5876 individuals (42%), 1116 (8%) were diagnosed with COPD and 545 (4%) had both diagnoses. The remaining 6564 individuals (46%) were lacking a recorded diagnosis. The gap between diagnosis and medication was present in all age-groups. Medication was used as a diagnostic tool among 30% of the undiagnosed patients and prescribed off-label for 54%. Missed recording of ICD-codes for existing asthma or COPD accounted for 16%.

Conclusion

There was a large discrepancy between prescribing of medication and the prevalence of diagnosed asthma and COPD. Consequently, the prevalence of prescriptions of medications indicated for asthma and COPD should not be used to estimate the prevalence of these conditions. Medication was used both as a diagnostic tool and in an off-label manner. Therefore, the prescribing of medications for asthma and COPD does not adhere to national clinical guidelines. More efforts should be made to improve the prescribing of medication indicated for asthma and COPD so that they align with current guidelines.
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Metadata
Title
Medication prescribing for asthma and COPD: a register-based cross-sectional study in Swedish primary care
Authors
Paolina Weidinger
J Lars G Nilsson
Ulf Lindblad
Publication date
01-12-2014
Publisher
BioMed Central
Published in
BMC Primary Care / Issue 1/2014
Electronic ISSN: 2731-4553
DOI
https://doi.org/10.1186/1471-2296-15-54

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