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Decision Models for Assessing the Cost Effectiveness of Treatments for Pediatric Drug-Resistant Epilepsy: A Systematic Review of Economic Evaluations

Author

Listed:
  • Jesse Elliott

    (University of Ottawa)

  • Sasha Katwyk

    (University of Ottawa)

  • Bláthnaid McCoy

    (University of Toronto
    The Hospital for Sick Children Toronto)

  • Tammy Clifford

    (University of Ottawa)

  • Beth K. Potter

    (University of Ottawa)

  • Becky Skidmore

    (Independent Information Specialist)

  • George A. Wells

    (University of Ottawa
    Cardiovascular Research Methods Centre, University of Ottawa Heart Institute)

  • Doug Coyle

    (University of Ottawa)

Abstract

Background Drug-resistant epilepsy affects about one-third of children with epilepsy and is associated with high costs to the healthcare system, yet the cost effectiveness of most treatments is unclear. Use of cannabis-based products for epilepsy is increasing, and the cost effectiveness of such strategies relative to conventional pharmacologic treatments must be considered. Objective The objective of this systematic review was to identify economic evaluations of cannabis-based treatments for pediatric drug-resistant epilepsy. We also sought to identify and appraise decision models that have been used in economic evaluations of pharmacologic treatments (i.e., antiepileptic drugs) in this population. Methods Electronic searches of MEDLINE, EMBASE, and the Cochrane library, as well as a targeted grey literature search, were undertaken (11 June 2018). Model-based full economic evaluations involving cannabis-based treatments or pharmacologic treatments for drug-resistant epilepsy in children were eligible for inclusion. Two independent reviewers selected studies for inclusion, and study quality was assessed by use of the Drummond and Consolidated Health Economic Evaluation Reporting Standards (CHEERS) checklists. Study findings, as well as model characteristics, are narratively summarized. Results Nine economic evaluations involving children with drug-resistant epilepsy were identified; however, none involved cannabis-based treatments. All studies involved pharmacologic treatments compared with other pharmacologic treatments or non-pharmacologic treatments (i.e., ketogenic diet, epilepsy surgery, vagus nerve stimulation). Few studies have assessed the cost effectiveness of pharmacologic treatments in specific drug-resistant epilepsy syndromes, including Dravet and Lennox-Gastaut syndromes. Five included studies involved use of Markov models with a similar structure (i.e., health states based on seizure frequency relative to baseline). There was a wide range of methodological quality, and few studies fully addressed context-specific issues such as weight gain and treatment switching. Conclusion Whether cannabis-based treatments for pediatric drug-resistant epilepsy represent good value for money has yet to be investigated. Economic evaluations of such treatments are needed and should address issues of particular importance in pediatric epilepsy, including weight gain over time, switching or discontinuation of treatments, effectiveness of interventions and comparators, and long-term effectiveness beyond the duration of available clinical studies. PROSPERO Registration CRD42018099591.

Suggested Citation

  • Jesse Elliott & Sasha Katwyk & Bláthnaid McCoy & Tammy Clifford & Beth K. Potter & Becky Skidmore & George A. Wells & Doug Coyle, 2019. "Decision Models for Assessing the Cost Effectiveness of Treatments for Pediatric Drug-Resistant Epilepsy: A Systematic Review of Economic Evaluations," PharmacoEconomics, Springer, vol. 37(10), pages 1261-1276, October.
    • Handle: RePEc:spr:pharme:v:37:y:2019:i:10:d:10.1007_s40273-019-00816-2
    DOI: 10.1007/s40273-019-00816-2
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    References listed on IDEAS

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    1. Don Husereau & Michael Drummond & Stavros Petrou & Chris Carswell & David Moher & Dan Greenberg & Federico Augustovski & Andrew Briggs & Josephine Mauskopf & Elizabeth Loder, 2013. "Consolidated Health Economic Evaluation Reporting Standards (CHEERS) Statement," PharmacoEconomics, Springer, vol. 31(5), pages 361-367, May.
    2. 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.
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