Luchini

Publications

Changing time and emotionsJournal articleStéphane Luchini et Pierre-Yves Geoffard, Philosophical Transactions of the Royal Society B: Biological Sciences, Volume 365, Issue 1538, pp. 271-280, 2010

In this paper, we consider that our experience of time (to come) depends on the emotions we feel when we imagine future pleasant or unpleasant events. A positive emotion such as relief or joy associated with a pleasant event that will happen in the future induces impatience. Impatience, in our context, implies that the experience of time up to the forthcoming event expands. A negative emotion such as grief or frustration associated with an unpleasant event that will happen in the future triggers anxiety. This will give the experience of time contraction. Time, therefore, is not exogeneously given to the individual and emotions, which link together events or situations, are a constitutive ingredient of the experience of time. Our theory can explain experimental evidence that people tend to prefer to perform painful actions earlier than pleasurable ones, contrary to the predictions yielded by the standard exponential discounting framework.

Risk perception and priority setting for intervention among hepatitis C virus and environmental risks: a cross-sectional survey in the Cairo communityJournal articleStéphane Luchini, Michael Schwarzinger, Mostafa Mohamed, Rita Gad, Sahar Dewedar, Arnaud Fontanet et Fabrice Carrat, BMC Public Health, Volume 10, Issue 1, pp. 773, 2010

BACKGROUND:
Hepatitis C virus (HCV) recently emerged as a major public health hazard in Egypt. However, dramatic healthcare budget constraints limit access to the costly treatment. We assessed risk perception and priority setting for intervention among HCV, unsafe water, and outdoor air pollution in Cairo city.

METHODS:
A survey was conducted in the homes of a representative sample of household heads in Cairo city. Risk perception was assessed using the "psychometric paradigm" where health hazards are evaluated according to several attributes and then summarized by principal component analysis. Priority setting was assessed by individual ranking of interventions reducing health hazards by 50% over five years. The Condorcet method was used to aggregate individual rankings of the three interventions (main study) or two of three interventions (validation study). Explanatory factors of priority setting were explored in multivariate generalized logistic models.

RESULTS:
HCV was perceived as having the most severe consequences in terms of illness and out-of-pocket costs, while outdoor air pollution was perceived as the most uncontrollable risk. In the main study (n = 2,603), improved water supply received higher priority than both improved outdoor air quality (60.1%, P < .0001) and screening and treatment of chronic hepatitis C (66.3%, P < .0001), as confirmed in the validation study (n = 1,019). Higher education, report of HCV-related diseases in the household, and perception of HCV as the most severe risk were significantly associated to setting HCV treatment as the first priority.

CONCLUSIONS:
The Cairo community prefers to further improving water supply as compared to improved outdoor air quality and screening and treatment of chronic hepatitis C.

Earned wealth, engaged bidders? Evidence from a second-price auctionJournal articleStéphane Luchini, Nicolas Jacquemet, Robert-Vincent Joule et Jason F. Shogren, Economics Letters, Volume 105, Issue 1, pp. 36-38, 2009

This paper considers whether earned wealth affects bidding behavior in an induced-value second-price auction. We find people bid more sincerely in the auction with earned wealth given monetary incentives; earned wealth did not induce sincere bidding in hypothetical auctions.

Equity in health care finance in Palestine: The triple effects revealedJournal articleMohammad Abu-Zaineh, Awad Mataria, Stéphane Luchini et Jean-Paul Moatti, Journal of Health Economics, Volume 28, Issue 6, pp. 1071-1080, 2009

This paper presents an application of the Urban and Lambert"upgraded-AJL Decomposition" approach that was designed to deal with the problem of close-income equals in equity analysis, and as applied to the area of health care finance. Contrary to most previous studies, vertical and horizontal inequities and the triple effects of inter-groups, intra-group and entire-group reranking of various financing schemes are estimated, with statistical significance calculated using the bootstrap method. Application is made on the three financing schemes present in the case of the Occupied Palestinian Territory. Results demonstrate the relative importance of the three forms of reranking in determining overall inequality. The paper offers policy recommendations to limit the existing inequalities in the system and to enhance the capacity of the governmental insurance scheme.

Évaluation économique en santé : qui a peur de l'étalon monétaire ?Journal articleStéphane Luchini, Marc Fleurbaey et Erik Schokkaert, Revue de Philosophie Economique / Review of Economic Philosophy, Volume 10, Issue 1, pp. 19-34, 2009

Les processus de décision publique possèdent une double dimension. Ils doivent à la fois tenir compte d’aspects économiques et du contexte socio-politique dans lequel ils s’inscrivent. Privilégier l’une des deux dimensions conduit nécessairement à des inefficacités. Nous construisons dans cet article une procédure d’évaluation expérimentale en deux étapes, fondée sur deux théories économiques, qui permet d’évaluer les bénéfices d’un projet public donné en tenant compte des aspects socio-politiques.

"If you have the flu symptoms, your asymptomatic spouse may better answer the willingness-to-pay question”: Evidence from a double-bounded dichotomous choice model with heterogeneous anchoringJournal articleStéphane Luchini, Michael Schwarzinger et Fabrice Carrat, Journal of Health Economics, Volume 28, Issue 4, pp. 873-884, 2009

The small sample size of contingent valuation (CV) surveys conducted in patients may have limited the use of the single-bounded (SB) dichotomous choice format which is recommended in environmental economics. In this paper, we explore two ways to increase the statistical efficiency of the SB format: (1) by the inclusion of proxies in addition to patients; (2) by the addition of a follow-up dichotomous question, i.e. the double-bounded (DB) dichotomous choice format. We found that patients ( n = 223 ) and spouses ( n = 64 ) answering on behalf of the patient had on average a similar willingness-to-pay for earlier alleviation of flu symptoms. However, a patient was significantly more likely to anchor his/her answer on the first bid as compared to a spouse. Finally, our original DB model with shift effect and heterogeneous anchoring reconciled the discrepancies found in willingness-to-pay statistics between SB and DB models in keeping with increased statistical efficiency.

Universal access to HIV treatment in developing countries: going beyond the misinterpretations of the ‘cost-effectiveness’ algorithmJournal articleJean Paul Moatti, Richard Marlink, Stéphane Luchini et Michel Kazatchkine, AIDS, Volume 22, pp. S59-S66, 2008

Background:
Economic cost-effectiveness analysis (CEA) has been proposed as the appropriate tool to set priorities for resource allocation among available health interventions. Controversy remains about the way CEA should be used in the field of HIV/AIDS.

Methods and objectives:
This paper reviews the general literature in health economics and public economics about the use of CEA for priority setting in public health, in order better to inform current debates about resource allocation in the fight against HIV/AIDS.

Results:
Theoretical and practical limitations of CEA do not raise major problems when it is applied to compare alternatives for treating the same medical condition or public health problem. Using CEA to set priorities among different health interventions by ranking them from the lowest to the highest values of their cost per life-year saved is appropriate only under the very restrictive and unrealistic assumptions that all interventions compared are discrete and finite alternatives that cannot vary in terms of size and scale. In order for CEA to inform resource allocation compared across programmes to fight the AIDS epidemic, a pragmatic interpretation of this economic approach, like that proposed by the Commission on Macroeconomics and Health, is better suited. Interventions, like a number of preventive strategies and first-line antiretroviral treatments for HIV, whose marginal costs per additional life-year saved are less than three times the gross domestic product per capita, should be considered cost-effective.

Conclusion:
Because of their empirical and theoretical limitations, results of CEA should only be one element in priority setting among interventions for HIV/AIDS, which should also be informed by explicit debates about societal and ethical preferences.

Equity in health care financing in Palestine: The value-added of the disaggregate approachJournal articleMohammad Abu-Zaineh, Awad Mataria, Stéphane Luchini et Jean-Paul Moatti, Social Science & Medicine, Volume 66, Issue 11, pp. 2308-2320, 2008

This paper analyzes the redistributive effect and progressivity associated with the current health care financing schemes in the Occupied Palestinian Territory, using data from the first Palestinian Household Health Expenditure Survey conducted in 2004. The paper goes beyond the commonly used “aggregate summary index approach” to apply a more detailed “disaggregate approach”. Such an approach is borrowed from the general economic literature on taxation, and examines redistributive and vertical effects over specific parts of the income distribution, using the dominance criterion. In addition, the paper employs a bootstrap method to test for the statistical significance of the inequality measures. While both the aggregate and disaggregate approaches confirm the pro-rich and regressive character of out-of-pocket payments, the aggregate approach does not ascertain the potential progressive feature of any of the available insurance schemes. The disaggregate approach, however, significantly reveals a progressive aspect, for over half of the population, of the government health insurance scheme, and demonstrates that the regressivity of the out-of-pocket payments is most pronounced among the worst-off classes of the population. Recommendations are advanced to improve the performance of the government insurance schemes to enhance its capacity in limiting inequalities in health care financing in the Occupied Palestinian Territory.

When to initiate highly active antiretroviral therapy in low-resource settings: The Moroccan experienceJournal articleSandrine Loubiere, Kamal Marhoum el Filal, Mustapha Sodqi, Anderson Loundou, Stéphane Luchini, Susan Cleary, Jean-Paul Moatti et Hakima Himmich, Antiviral therapy, Volume 13, Issue 2, pp. 241-251, 2008

The aim of this study was to assess the cost-effectiveness of HIV treatment alternatives - with and without highly active antiretroviral therapy (HAART) - within alternative strata based on the...

Heterogeneous anchoring and the shift effect in iterative valuation questionsJournal articleFrédéric Aprahamian, Olivier Chanel et Stéphane Luchini, Resource and Energy Economics, Volume 30, Issue 1, pp. 12-20, 2008

In this article, we consider starting point bias as a heterogeneous phenomenon, that is, respondents in CV surveys do not anchor in the sameway. We study the consequences of a mistaken assumption of homogeneous anchoring for the analysis of the shift effect in multiple-bounded dichotomous choice format, when respondents really have heterogeneous anchoring. We show that the shift effect, generally interpreted as incentive incompatibility or “yea”-saying, can be the spurious outcome of disregarded heterogeneous anchoring.