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Health-care utilization and costs with fluticasone propionate and fluticasone propionate/salmeterol in asthma patients at risk for exacerbations

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Abstract:

Although studies have established that adding long-acting beta agonists (LABA) to inhaled corticosteroid (ICS) monotherapy among patients with inadequately controlled asthma is associated with better outcomes than increasing ICS dosage, outcomes with ICS versus fixed-dose ICS/LABA combination among patients with recent asthma exacerbation or frequent use of rescue medication are unavailable. This study was designed to compare health-care utilization/costs among patients with recent asthma exacerbation or frequent rescue medication use who received fluticasone propionate (FP) alone versus fixed-dose FP/salmeterol combination (FSC). A retrospective cohort study was conducted using a large health insurance data set. Patients with one or more claims with asthma diagnosis, two or more prescriptions for FSC (250/50- or 100/50-mg formulations) or FP (220- or 110-mg formulations), and one or more asthma exacerbations or five or more short-acting beta agonist (SABA) prescriptions within 1 year before initial receipt of study medications were included. Health-care utilization/costs and controller therapy compliance were compared for patients receiving FSC versus FP using multivariate regression analysis controlling for FP dose and baseline characteristics. A total of 7779 patients met inclusion criteria (5769, FSC, and 2010, FP) with comparable mean follow-up (FSC, 685 days; FP, 670 days; p = 0.151). Controlling for FP dosage and baseline characteristics, FSC patients had lower risks of asthma-related exacerbations, fewer SABAs and systemic corticosteroids, higher costs of asthma medications and total asthma-related health care, and lower total asthma-related health-care costs excluding study medication cost. In asthma patients with recent exacerbation or frequent SABA use, receipt of FSC reduced asthma-related exacerbation risks and rescue medication use versus receipt of FP.

Keywords: Asthma; asthma exacerbation; fixed-dose combination therapy; fluticasone propionate; health-care costs; inhaled corticosteroids; long-acting beta agonist; retrospective study; salmeterol; systemic corticosteroid

Document Type: Research Article

DOI: http://dx.doi.org/10.2500/aap.2014.35.3720

Affiliations: Policy Analysis, Inc., Brookline, Massachusetts, and 2GlaxoSmithKline, Research Triangle Park, North Carolina, USA

Publication date: January 1, 2014

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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