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The issue of open-source models in the cost-effectiveness and disease-level (collaborative) models has been brewing for many years. There has been a marked growth in open science, and funding bodies and publishers increasingly require that research data be made available. As mentioned in our previous Issue Panel, “cost-effectiveness models synthesise a wide range of evidence to facilitate extrapolation over time and from intermediate to final decision endpoints. These models are often statistically sophisticated and require assumptions that are not directly testable. This can lead to decision-makers “discounting” the results of cost-effectiveness analyses, particularly if the developer is seen as partial.” Open-source models, then, would encourage greater transparency in pharmacoeconomic modeling and the reuse and updating of the best/most useful models; they are essential if cost-effectiveness analyses are to be widely accepted to reduce bias, increase transparency, improve model access, and allow for faster access to critical knowledge. The ISPOR-SMDM guidelines and the EUnetHTA joint action projects, are supportive of these views on collaboration, transparency, confidentiality, processes and consistency offered by the availability of open-source models to improve decision-making around health care and reimbursement. With openness and sharing, however, come issues of copyright and access and a need to define how model sharing can be achieved in a fair and equitable manner. There is, therefore, a need to develop an ongoing dialog on openness, especially where the research may be considered precompetitive and not worthy of IP investment. The pros and cons of open source models and the proposed mission of the Open Source Model SIG to curate an ongoing dialog regarding issues around creating, disseminating, sharing, evaluating, and updating open source cost-effectiveness and comparative effectiveness models will be debated amongst SIG members.
Author(s) and affiliation(s): Nancy Risebrough, Senior Principal, ICON plc, Toronto, Canada Jeroen P Jansen; Innovation & Value Initiative; Precision Medicine Group; and Stanford University Lotte Steuten, Vice President & Head of Consulting, Office of Health Economics, UK Renée JG Arnold, PharmD, RPh, ICON plc, New York, NY and Icahn School of Medicine at Mount Sinai, New York, NY, USA
Event: ISPOR 2019 Annual Meeting