Adapting portfolio theory for the evaluation of multiple investments in health with a multiplicative extension for treatment synergies

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Show simple item record Bridges, JFP Stewart, M King, MT Van Gool, K 2009-12-21T02:36:37Z 2002
dc.identifier.citation European Journal of Health Economics, 2002, 3 (1), pp. 47 - 53
dc.identifier.issn 1618-7598
dc.identifier.other C1 en_US
dc.description.abstract Portfolio theory is central to the analysis of risk in many areas of economics but is seldom used appropriately in health economics. This contribution examines the use of portfolio theory in the context of cost-effectiveness analysis (CEA). A number of modifications are needed to apply portfolio analysis to the economic evaluation of health care interventions. First, the method of reporting the results of a CEA, and consequently some of the underlying assumptions, needs to be modified. Second, portfolio theory needs to be expressed in terms of effects on individuals aggregated to a population. Finally, one needs to allow for the possibility of synergy between the various health interventions. This paper derives a general formula for a portfolio of health care interventions that allows for synergies between interventions where the population effects are aggregated from individual effects. A number of special cases are also derived to highlight the nature of the formulation of the modified portfolio theory. We conclude that, while modified portfolio theory adds a theoretical foundation to health care evaluations, it may not be operational until estimates of the correlation between interventions are available, and the question of uncertainty is resolved in health care evaluation. Also, while a synergy may be present at the individual level, when aggregated over a large population it may not be significant given the standard assumption of constant returns to scale. © Springer-Verlag 2002.
dc.language eng
dc.relation.isbasedon 10.1007/s10198-001-0090-5
dc.title Adapting portfolio theory for the evaluation of multiple investments in health with a multiplicative extension for treatment synergies
dc.type Journal Article
dc.parent European Journal of Health Economics
dc.journal.volume 1
dc.journal.volume 3
dc.journal.number 1 en_US
dc.publocation Dordrecht, The Netherlands en_US
dc.identifier.startpage 429 en_US
dc.identifier.endpage 445 en_US Information Technology en_US
dc.personcode 106498
dc.personcode 020118
dc.description.keywords Evaluation
dc.description.keywords Risk
dc.description.keywords Treatment synergies
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Business
pubs.organisational-group /University of Technology Sydney/Strength - Health Economics and Research Evaluation
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)

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