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Impact of updated trial data on the cost-effectiveness of percutaneous mitral repair

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  • Martin Connock
  • Peter Auguste
  • Jean-François Obadia
  • Lazaros Andronis
  • Xavier Armoiry

Abstract

When updated clinical trial data becomes available reassessing the cost-effectiveness of technologies may modify estimates and influence decision-making. We investigated the impact of updated trial outcomes on the cost-effectiveness of percutaneous mitral repair (PR) for secondary mitral regurgitation. We updated our previous three-state time-varying Markov model to assess the cost-effectiveness of PR + guideline directed medical treatment (GDMT) versus GDMT alone. Key clinical inputs (overall survival (OS) and heart failure hospitalisations (HFH)) were obtained using the 3-year trial findings from the COAPT (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy) RCT. We calculated incremental cost-effectiveness ratios (ICER) and report how these differ between analyses based on early (2-year) and updated (3-year) evidence. Updated trial data showed an increase in mortality in the intervention arm between two and three years follow-up that was not seen in the control arm. Deterministic and multivariate cost-effectiveness modelling yielded incremental cost effectiveness ratios ICERs of €38,123 and €31,227 /QALY. Compared to our 2-year based estimate (€21,918 / QALY) these results imply an approximate 1.5-fold increase in ICER. The availability of updated survival analyses from the COAPT pivotal trial suggests previous estimates based on 2-year trial findings were over optimistic for the intervention.

Suggested Citation

  • Martin Connock & Peter Auguste & Jean-François Obadia & Lazaros Andronis & Xavier Armoiry, 2023. "Impact of updated trial data on the cost-effectiveness of percutaneous mitral repair," PLOS ONE, Public Library of Science, vol. 18(1), pages 1-13, January.
    • Handle: RePEc:plo:pone00:0280554
    DOI: 10.1371/journal.pone.0280554
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