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Abstract
Introduction: Socioeconomic status (SES) is strongly associated with morbidity as well as with health care utilization and expenditure. The association between SES and quality of prescribing of asthma drugs is less studied. Objectives: The aim of this study was to examine the association between socioeconomic factors, i.e. education, income and country of birth, and the prevalence, incidence and adherence to guidelines for antiasthmatic drugs. Methods: This registry study includes all Swedish citizens aged 25–44 years who redeemed at least one prescription of an antiasthmatic drug during 2010. Incidence and prevalence was calculated. The adherence to guidelines was studied using two defined quality indicators. Heavy users were also assessed. Results: Incidence for antiasthmatic drugs was 18.4 per 1000 person-years and the prevalence 50.9 per 1000 inhabitants. Previously untreated patients who redeemed fixed combination ranged from 45% to 49%. Patients who purchase long-acting beta-2-adrenoceptor agonists (LABA) without inhaled corticosteroid ranged from 43% to 59%. Six percent of the population was classified as heavy users. Conclusion: The study showed a high incidence and prevalence of asthma drug use with a poor adherence to guidelines for rational drug prescribing. Fixed combination as first line asthma treatment as well as purchasing LABA without concomitant ICS was more common in patients born outside Scandinavia. Heavy users of short-acting bronchodilators were associated with male sex, high age, low income levels and low levels of education.
Acknowledgements
The study was supported by the Drug & Therapeutics Committee in Stockholm County Council and Karolinska Institutet.