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The impact of adherence and disease control on resource use and charges in patients with mild asthma managed on inhaled corticosteroid agents

Authors P Navaratnam, HS Friedman, E Urdaneta

Published 21 June 2010 Volume 2010:4 Pages 197—205

DOI https://doi.org/10.2147/PPA.S9800

Review by Single-blind

Peer reviewer comments 5

P Navaratnam1, HS Friedman2, E Urdaneta3

1Eympres Research, LLC, Hilliard, OH, USA; 2Analytic Solutions, LLC, New York, NY, USA; 3Schering-Plough Corporation, Kenilworth, NJ, USA

Objective: Inadequate asthma control may affect asthma resource use and treatment charges, consequently contributing to the growing economic burden of asthma. The study objective was to determine the impact of medication adherence and asthma control on resource use and charges in mild asthmatic patients treated with inhaled corticosteroids (ICSs).

Research design and methods: A claims database was analyzed retrospectively from October 2001–December 2007 to identify mild asthmatic patients aged 12–65 years who began ICS treatment. Demographics, drug utilization, and resource use for each patient were identified for the 365-day period before and after the index date (pre-index and post-index periods, respectively). Patients were designated as having high control high adherence (HCHA) or low control low adherence (LCLA) based on post-index exacerbations and the percentage of days covered; not all patients who qualified for study inclusion met adherence designation requirements. Differences between the HCHA and LCLA cohorts in resource use (eg, asthma treatment days) and asthma-related treatment charges were assessed.

Results: Compared with the HCHA cohort (n = 483), the LCLA cohort (n = 258) had more asthma treatment days (2.9 vs 3.9, respectively; P < 0.0001) and higher overall asthma treatment charges ($2655 vs $3345, respectively; P < 0.0001) in the post-index period. An adjusted odds ratio suggested that patients receiving mometasone furoate (MF) were approximately 5 times more likely to belong to the HCHA cohort than patients receiving any other ICS (P < 0.0001).

Conclusions: Better asthma control and adherence to prescribed ICSs are associated with lower asthma-related resource use and charges. Mild asthmatic patients receiving MF were more likely to be in the HCHA cohort than patients receiving other ICSs, perhaps due to the once-daily dosing of MF. Current NAEPP guidelines recommend low-dose ICS monotherapy for mild persistent asthma; thus, it is critical to optimize mild persistent asthma control and limit unnecessary resource use and charges.

Keywords: adherence, asthma control, beclomethasone dipropionate, budesonide, fluticasone propionate, mometasone furoate, retrospective claims analysis

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