Quality-adjusted life-years (QALYs) are the most common utility measure in medical decision analysis and economic evaluations of health care. This paper presents an axiomatization of QALYs under...
Directeur de Recherche CNRS (2008)
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Han Bleichrodt, Jose Luis Pinto, Peter P. Wakker
This paper proposes a quantitative modification of standard utility measurement procedures, such as the probability and certainty equivalence methods, to correct for commonly observed violations of...
Bleichrodt, Han, Abellán Perpiñán, José María, Pinto Prades, José Luis, Méndez, Ildefonso
This paper explores biases in the elicitation of utilities under risk and the contribution that generalizations of expected utility can make to the resolution of these biases. We used five methods to...
A Consistency Test of the Time Trade-Off (2003)
Bleichrodt, Han, Pinto Prades, José Luis, Abellán Perpiñán, José María
This paper tests the internal consistency of time trade-off utilities. We find significant violations of consistency in the direction predicted by loss aversion. The violations disappear for higher...
Economic evaluation of newborn hearing screening procedures (2002)
Valenciano Investigaciones Económicas, Han Bleichrodt, Mike Drummond, Dunia López-pintado, Lars Osterdal, Jaume Puig, ...
IVIEworkingpapersoffer in advance the results of economic research under way in order to encourage a discussion process before sending them to scientific journals for their final publication. * This...
An Experimental Test of Loss Aversion and Scale Compatibility (2000)
Bleichrodt, Han, Pinto Prades, José Luis
This paper studies two important reasons why people violate procedure invariance, loss aversion and scale compatibility. The paper extends previous research on loss aversion and scale compatibility...
The zero condition: A simplifying assumption in QALY measurement and multiattribute utility (1998)
John M. Miyamoto, Peter P. Wakker, Han Bleichrodt
This paper studies the implications of the ‘‘zero-condition’ ’ for multiattribute utility theory. The zero-condition simplifies the measurement and derivation of the Quality Adjusted Life...
Comparison and Evaluation of States of Health (1997)
Herrero, Carmen, Pinto Prades, José Luis, Bleichrodt, Han
Starting from a finite or countable set of states of health, and assuming the existence of an objective transitive preference relation on that set, we propose a way of performing interpersonal...
Han Bleichrodt, Ildefonso Méndez-Martínez
This paper explores inconsistencies that occur in utility measurement under risk when expected utility is assumed and the contribution that prospect theory and some other generalizations of expected...
A New Type of Preference Reversal
The classic preference reversal phenomenon arises in a comparison between a choice and a matching task. We present a new type of preference reversal which is entirely choice-based. Because choice is...
A new explanation for the difference between time trade-off utilities and standard gamble utilities
This paper gives a new explanation for the systematic disparity between standard gamble (SG) utilities and time trade-off (TTO) utilities. The common explanation, which is based on expected utility,...
Han Bleichrodt, Louis Eeckhoudt
We provide a new test of the feasibility of using contingent valuation to value informal care. We start with a theoretical model of informal caregiving and derive that willingness to pay depends...
Han Bleichrodt, JoséLuis Pinto, Ildefonso Méndez-Martínez
This paper explores biases in the elicitation of utilities under risk and the contribution that generalizations of expected utility can make to the resolution of these biases. We used five methods to...
Probability Weighting in Choice under Risk: An Empirical Test.
This paper reports a violation of rank-dependent utility with inverse S-shaped probability weighting for binary gambles. The paper starts with a violation of expected utility theory: one-stage...
Characterizing QALYs by Risk Neutrality.
Bleichrodt, Han, Wakker, Peter, Johannesson, Magnus
This paper shows that QALYs can be derived from more elementary conditions than thought hitherto in the literature: it suffices to impose risk neutrality for life years in every health state. This...
Testing the predective validity of the time trade-off and the Stardard Gamble
This paper tests the consistency of health utility measurements with individual preferences. We compare three methods, the time trade-off, the standard gamble and a version of the standard gamble...
Testing the Predictive Validity of the Time Trade-Off and the Standard Gamble.
This paper tests the consistency of health utility measurements with individual preferences. We compare three methods, the time trade-off, the standard gamble and a version of the standard gamble...
A new preference reversal in health utility measurement
A central assumption in health utility measurement is that preferences are invariant to the elicitation method that is used. This assumptioin is challenged by preferences reversals. Previous studies...
Willingness to pay for reductions in health risks when probabilities are distorted
Han Bleichrodt, Louis Eeckhoudt
We study the willingness to pay for reductions in health risks when people do not evaluate probabilities linearly, as is commonly assumed in elicitations of willingness to pay, but weight...
A new and more robust test of QALYs
Doctor, Jason N., Bleichrodt, Han, Miyamoto, John, Temkin, Nancy R., Dikmen, Sureyya
Income-related inequalities in health: some international comparisons
Van Doorslaer, Eddy, Wagstaff, Adam, Bleichrodt, Han, Calonge, Samuel, Gerdtham, Ulf-G., Gerfin, Michael, ...
Characterizing QALYs under a General Rank Dependent Utility Model.
Bleichrodt, Han, Quiggin, John
This paper provides a characterization of QALYs, the most important outcome measure in medical decision making, in the context of a general rank dependent utility model. We show that both for chronic...
Saving under rank-dependent utility
Han Bleichrodt, Louis Eeckhoudt
In this note we use the rank-dependent utility (RDU) model to analyze saving decisions. The RDU model enables us to separate the effects of pessimism and optimism on saving from that of concavity of...
An Experimental Test of Loss Aversion and Scale Compatibility
Han Bleichrodt, José Luis Pinto
This paper studies two important reasons why people violate procedure invariance, loss aversion and scale compatibility. The paper extends previous research on loss aversion and scale compatibility...
A Consistency Test of the Time Trade-Off
Han Bleichrodt, José Luis Pinto
This paper tests the internal consistency of time trade-off utilities. We find significant violations of consistency in the direction predicted by loss aversion. The violations disappear for higher...
Comparison and Evaluation of States of Health
Carmen Herrero, José Luis Pinto, Han Bleichrodt
Starting from a finite or countable set of states of health, and assuming the existence of an objective transitive preference relation on that set, we propose a way of performing interpersonal...
An Experimental Test of Loss Aversion and Scale Compatibility
Han Bleichrodt, José Luis Pinto
This paper studies two important reasons why people violate procedure invariance, loss aversion and scale compatibility. The paper extends previous research on loss aversion and scale compatibility...
A Consistency Test of the Time Trade-Off
Han Bleichrodt, José Luis Pinto
This paper tests the internal consistency of time trade-off utilities. We find significant violations of consistency in the direction predicted by loss aversion. The violations disappear for higher...
New tests of QALYs when health varies over time
Bleichrodt, Han, Filko, Martin
This paper performs new tests of the QALY model when health varies over time. Our tests do not involve confounding assumptions and are robust to violations of expected utility. The results support...
A tractable method to measure utility and loss aversion under prospect theory
Mohammed Abdellaoui, Han Bleichrodt, Olivier L’Haridon
Prospect theory, Utility measurement, Loss aversion, D81,
Aversion to health inequalities and priority setting in health care
Bleichrodt, Han, Crainich, David, Eeckhoudt, Louis
Traditionally aversion to health inequality is modelled through a concave utility function over health outcomes. Bleichrodt et al. [Bleichrodt, H., Diecidue E., Quiggin J., 2004. Equity weights in...
New evidence of preference reversals in health utility measurement
A central assumption in health utility measurement is that preferences are invariant to the elicitation method used. This assumption is challenged by preference reversals. Previous studies have...
Non-hyperbolic time inconsistency
Bleichrodt, Han, Rohde, Kirsten I.M., Wakker, Peter P.
The commonly used hyperbolic and quasi-hyperbolic discount functions have been developed to accommodate decreasing impatience, which is the prevailing empirical finding in intertemporal choice, in...