Transferability of economic evaluations: approaches and factors to consider when using results from one geographic area for another

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Abstract
Background: Geographic transferability of economic evaluation data from one country to another has the potential to make a more efficient use of national and international evaluation resources. However, inappropriate transferability of economic data can provide misleading results and lead to an inefficient use of scarce health care resources.Objectives: The objective of this study was to review, summarize and categorize the literature on: (i) factors affecting the geographic transferability of economic evaluation data; and (ii) approaches which have either been proposed or used for transferability.Methods: A systematic literature review on transfer­ability was conducted. Electronic databases, hand searching and bibliographic searching techniques were utilized. Inclusion criteria for the review included conceptual or empirical papers with mention of factors affecting, or approaches for, transferability of economic evaluation data across geographic locations. Exclusion criteria included papers publi...