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Do different clinical evidence bases lead to discordant health-technology assessment decisions? An in-depth case series across three jurisdictions

Authors Spinner D, Birt J, Walter J, Bowman L, Mauskopf J, Drummond M, Copley-Merriman C

Received 27 October 2012

Accepted for publication 22 December 2012

Published 30 January 2013 Volume 2013:5 Pages 69—85

DOI https://doi.org/10.2147/CEOR.S39624

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Daryl S Spinner,1 Julie Birt,2 Jeffrey W Walter,1 Lee Bowman,2 Josephine Mauskopf,1 Michael F Drummond,3 Catherine Copley-Merriman1

1RTI Health Solutions, Research Triangle Park, NC, USA; 2Eli Lilly and Company, Indianapolis, IN, United States; 3University of York, York, UK

Background: Health-technology assessment (HTA) plays an important role in informing drug-reimbursement decision-making in many countries. HTA processes for the Pharmaceutical Benefits Advisory Committee (PBAC) in Australia, the Common Drug Review (CDR) in Canada, and the National Institute for Health and Clinical Excellence (NICE) in England and Wales are among the most established in the world. In this study, we performed nine in-depth case studies to assess whether different clinical evidence bases may have influenced listing recommendations made by PBAC, CDR, and NICE.
Methods: Nine drugs were selected for which the three agencies had provided listing recommendations for the same indication between 2007 and 2010. We reviewed the evidence considered for each listing recommendation, identified the similarities and differences among the clinical evidence bases considered, and evaluated the extent to which different clinical evidence bases could have contributed to different decisions based on HTA body comments and public assessment of the evidence.
Results: HTA agencies reached the same recommendation for reimbursement (recommended for listing) for four drugs and different recommendations for five drugs. In all cases, each agency used different evidence bases in their recommendations. The agencies considered overlapping sets of clinical comparators and trials when evaluating the same drug. While PBAC and NICE considered indirect and/or mixed-treatment comparisons, CDR did not. In some cases, CDR and/or NICE excluded trials from review if the drug and/or the comparator were not administered according to the relevant marketing authorization.
Conclusions: In the listing recommendations reviewed, considerable variability exists in the clinical evidence considered by PBAC, CDR, and NICE for drug-listing recommendations. Differences in evidence resulted from differences in the consideration of indirect and mixed-treatment comparison data and differences in medical practice in each jurisdiction.

Keywords: health-technology assessment, reimbursement decisions, evidence

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