Out of Date or Best Before? A Commentary on the Relevance of Economic Evaluations Over Time
Gemma E. Shields (),
Stuart Wright and
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Gemma E. Shields: The University of Manchester
Becky Pennington: University of Sheffield
Ash Bullement: University of Sheffield
Stuart Wright: The University of Manchester
Jamie Elvidge: National Institute for Health and Care Excellence
PharmacoEconomics, 2022, vol. 40, issue 3, No 2, 249-256
Abstract The impact of time on the applicability and relevance of historical economic evaluations can be considerable. Ignoring this may lead to the use of weak or invalid evidence to inform important research questions or resource allocation decisions, as historical economic evaluations may have reached different conclusions compared to if a similar study had been conducted more recently. There are multiple factors that contribute towards evidence becoming outdated including changes to the relevant decision problem (e.g. comparators), changes to parameters (such as costs, utilities and resource use) and methodological updates (e.g. recommendations on uncertainty analysis). Researchers reviewing economic evaluations need to consider whether changes over time would influence the study design and results if the evaluation were repeated, to the extent that it is no longer helpful or informative. In this paper, we summarise these key issues and make recommendations about how and whether researchers can future proof their economic evaluations.
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