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Eur J Clin Pharmacol. 2010 Apr;66(4):399-406. doi: 10.1007/s00228-009-0749-x. Epub 2009 Nov 21.

Prevalence, incidence and persistence of anti-asthma medication use in 2- to 29-year-olds: a nationwide prescription study.

Author information

  • 1Norwegian Institute of Public Health, Oslo, Norway. oystein.karlstad@fhi.no

Abstract

PURPOSE:

The purpose of this study was to examine gender- and age-specific prevalence, incidence, and the type of anti-asthma medications used in the Norwegian population aged 2-29 years during 2005-2007 and to estimate the share of individuals who regularly redeemed medications over a 3-year period.

METHODS:

We retrieved data from the nationwide Norwegian Prescription Database for all individuals 2-29 years old (n = 1.7 million) who received anti-asthma medications during 2005-2007. Medications included inhaled short- and long-acting beta(2)-agonists, inhaled corticosteroids, fixed-dose combinations of inhaled beta(2)-agonists and corticosteroids, and leukotriene antagonists.

RESULTS:

In 2007, 5.5% (92,074 individuals) of Norwegians aged 2-29 years received anti-asthma medication, and this figure was stable throughout 2005-2007. Prevalence and incidence were higher among males than females but shifted to female dominance during adolescence. The share of anti-asthma medication users who received inhaled corticosteroids was high in preschool children but decreased by age. Conversely, use of inhaled beta(2)-agonists as monotherapy and of fixed combinations increased with age. Fewer than half the individuals were "persistent" to medication treatment for 3 years by redeeming prescriptions regularly (at least once a year).

CONCLUSIONS:

In this nationwide study, annual prevalence of anti-asthma medication use was stable during 2005-2007. The gender- and age-specific profile of prevalence and incidence correspond well with other studies. Fewer than half the individuals redeemed prescriptions regularly over 3 years.

PMID:
19936728
[PubMed - indexed for MEDLINE]
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