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Cost Effectiveness of Leukotriene Receptor Antagonists versus Long-Acting Beta-2 Agonists as Add-On Therapy to Inhaled Corticosteroids for Asthma

Author

Listed:
  • Edward Wilson
  • David Price
  • Stanley Musgrave
  • Erika Sims
  • Lee Shepstone
  • Jamie Murdoch
  • H. Mugford
  • Annie Blyth
  • Elizabeth Juniper
  • Jon Ayres
  • Stephanie Wolfe
  • Daryl Freeman
  • Richard Gilbert
  • Elizabeth Hillyer
  • Ian Harvey

Abstract

Background: Information is lacking on the relative effectiveness and cost effectiveness — in a real-life primary-care setting — of leukotriene receptor antagonists (LTRAs) and long-acting β2 adrenergic receptor agonists (β2 agonists) as add-on therapy for patients whose asthma symptoms are not controlled on low-dose inhaled corticosteroids (ICS). Objective: To estimate the cost effectiveness of LTRAs compared with longacting β2 agonists as add-on therapy for patients whose asthma symptoms are not controlled on low-dose ICS. Methods: An economic evaluation was conducted alongside a 2-year, pragmatic, randomized controlled trial set in 53 primary-care practices in the UK. Patients aged 1280 years with asthma insufficiently controlled with ICS (n=361) were randomly assigned to add-on LTRAs (n=176) or long-acting β2 agonists (n=185). The main outcome measures were the incremental cost per point improvement in the Mini Asthma Quality of Life Questionnaire (MiniAQLQ), per point improvement in the Asthma Control Questionnaire (ACQ) and per QALY gained from perspectives of the UK NHS and society. Results: Over 2 years, the societal cost per patient receiving LTRAs was £1157 versus £952 for long-acting b2 agonists, a (significant, adjusted) increase of d214 (95%CI 2, 411) [year 2005 values]. Patients receiving LTRAs experienced a non-significant incremental gain of 0.009 QALYs (95% CI −0.077, 0.103). The incremental cost per QALY gained from the societal (NHS) perspective was £22 589 (£11 919). Uncertainty around this point estimate suggested that, given a maximum willingness to pay of £30 000 per QALY gained, the probability that LTRAs are a cost-effective alternative to long-acting β2 agonists as add-on therapy was approximately 52% from both societal and NHS perspectives. Conclusions: On balance, these results marginally favour the repositioning of LTRAs as a cost-effective alternative to long-acting β2 agonists as add-on therapy to ICS for asthma. However, there is much uncertainty surrounding the incremental cost effectiveness because of similarity of clinical benefit and broad confidence intervals for differences in healthcare costs. Trial registration: UK National Research Register N0547145240; Controlled Clinical Trials ISRCTN99132811. Copyright Adis Data Information BV 2010

Suggested Citation

  • Edward Wilson & David Price & Stanley Musgrave & Erika Sims & Lee Shepstone & Jamie Murdoch & H. Mugford & Annie Blyth & Elizabeth Juniper & Jon Ayres & Stephanie Wolfe & Daryl Freeman & Richard Gilbe, 2010. "Cost Effectiveness of Leukotriene Receptor Antagonists versus Long-Acting Beta-2 Agonists as Add-On Therapy to Inhaled Corticosteroids for Asthma," PharmacoEconomics, Springer, vol. 28(7), pages 597-608, July.
    • Handle: RePEc:spr:pharme:v:28:y:2010:i:7:p:597-608
    DOI: 10.2165/11537560-000000000-00000
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    References listed on IDEAS

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    1. Drummond, Michael F. & Sculpher, Mark J. & Torrance, George W. & O'Brien, Bernie J. & Stoddart, Greg L., 2005. "Methods for the Economic Evaluation of Health Care Programmes," OUP Catalogue, Oxford University Press, edition 3, number 9780198529453.
    2. Claxton, Karl, 1999. "The irrelevance of inference: a decision-making approach to the stochastic evaluation of health care technologies," Journal of Health Economics, Elsevier, vol. 18(3), pages 341-364, June.
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