Ventelou

Publications

Fee-for-service payments and consultation length in general practice: a work-leisure trade-off model for French GPsJournal articleIsabelle Clerc, Olivier L’haridon, Alain Paraponaris, Camelia Protopopescu and Bruno Ventelou, Applied Economics, Volume 44, Issue 25, pp. 3323-3337, 2012

This article presents an adaptation of the labour supply model applied to the independent medical sector. First, we model simultaneous General Practitioner (GP) decisions on both the leisure time and the consultation length for two payment schemes: fixed fees and unregulated fees. The objective of this econometric study is to validate the theoretical prediction that doctors under unregulated fees may make choices about the length of patient consultations independent of their personal leisure decision. Indeed, according to our empirical results, the bidirectional link between leisure choice and consultation length – verified with fixed fees – does not hold any longer under unregulated fees. Our findings can be seen as a necessary but not a sufficient condition to legitimize unregulated fees in general practice.

Granger causality between total expenditure on health and GDP in OECD: Evidence from the Toda-Yamamoto approachJournal articleArshia Amiri and Bruno Ventelou, Economics Letters, Volume 116, Issue 3, pp. 541-544, 2012

In this paper, a modified version of the Granger causality test proposed by Toda and Yamamoto is used to investigate causality between GDP and healthcare expenditure in OECD countries. The findings indicate that bidirectional Granger causality is predominant.

Continuous-Time Markov Model for Transitions between Employment and Non-employment : the Impact of a Cancer DiagnosisJournal articleXavier Joutard, Alain Paraponaris, Luis Sagaon Teyssier and Bruno Ventelou, Annals of Economics and Statistics, Issue 107-108, pp. 239-265, 2012

This article investigates whether a cancer diagnosis can cause a permanent loss in employability. In this regard, we evaluate the impact of cancer on labor market conditions by constructing transition matrices to compare the transitions between occupational states. We obtain a set of statistics based on our estimations by using continuous-time Markov transition processes to study and compare the labor market dynamics in two populations: 1) individuals diagnosed with cancer and 2) individuals free of cancer in the general population. The consequences of cancer diagnosis were measured by the significant deviation in the transition matrix for cancer survivors in comparison to the prior matrix standardized according to the general population. We accounted for the probability that some individuals in the control group (i.e., the general population) could be diagnosed with cancer which is a key-issue in case-control studies. The absence of detailed information about the health statuses of the individuals in the control group required the implementation of the EM algorithm for maximizing the adapted likelihood function. We jointly estimated the probability of being diagnosed with cancer in the control group and the parameters of our model. Given that individuals are exposed differently to cancer depending on their activities, we stratified the dataset by socioeconomic status (SES) for two reasons: 1) to clearly distinguish between the cancer-specific effects and 2) to account for the other stigmatizing factors in the labor market that are inherent to the examined subpopulations (i.e., low- and high-SES groups). We also considered the systematic differences in the subjects' socioeconomic statuses and their abilities to return to work. We determined whether these differences are related to illness (e.g., cancer sites or prognosis) or occupation (e.g., physical demands).

La médecine générale vue par les médecins généralistes libérauxJournal articleAlain Paraponaris, Bruno Ventelou, Pierre Verger, Pascale Desprès, Catherine Aubry, Carole Colin, Caroline Bonnet, Thomas Hérault, Rémy Sebbah and Yolande Obadia, Revue française des affaires sociales, Issue 2-3, pp. 29-47, 2011
Évaluation de l'impact des changements épidémiologiques sur la dépense de santé en France pour 2025 : approche par microsimulationJournal articleSophie Thiébaut and Bruno Ventelou, Sciences sociales et santé, Volume 29, Issue 1, pp. 35-68, 2011

Nous proposons une méthode de prédiction de l’évolution des dépenses de santé ambulatoires (i.e. non hospitalières) sous l’effet du vieillissement de la population française à l’horizon 2025. Le modèle intègre deux indicateurs d’états de santé sur lesquels chaque agent de la base de données pourra transiter, par microsimulation, créant ainsi une dynamique épidémiologique individuelle entre bonne et mauvaise santé. À l’aide d’un modèle économétrique de consommation de biens et services de santé, nous déduisons la dépense française en santé en 2025 par agrégation de la population représentative vieillie en 2025. Le support choisi pour la première application de l’outil est la base de données ESPS 2000 de l’IRDES appariée avec l’Échantillon permanent d’assurés sociaux (EPAS). Le thème traité est l’impact de changements épidémiologiques sur le montant des dépenses ambulatoires. Ces simulations ont été réalisées pour trois scénarios épidémiologiques : scénario à dynamique épidémiologique constante, vieillissement en bonne santé et vieillissement en bonne santé + progrès médical (sans prise en compte des effets prix).

Non-adherence to antiretroviral treatment and unplanned treatment interruption among people living with HIV/AIDS in Cameroon: Individual and healthcare supply-related factorsJournal articleSylvie Boyer, Isabelle Clerc, Cécile-Renée Bonono, Fabienne Marcellin, Paule-Christiane Bilé and Bruno Ventelou, Social Science & Medicine, Volume 72, Issue 8, pp. 1383-1392, 2011

In low-income countries, health system deficiencies may undermine treatment continuity and adherence to antiretroviral therapy (ART) that are crucial for the success of large-scale public ART programs. In addition to examining the effects of individual characteristics, on non-adherence to ART and treatment interruption behaviors - i.e. treatment interruption for more than 2 consecutive days during the previous 4 weeks, this study aims to extend our knowledge on the role played by healthcare supply-related characteristics in shaping these two treatment outcomes. These effects are examined using multilevel logistic models applied to a sub-sample of 2381 ART-treated patients followed-up in 27 treatment centers in Cameroon (ANRS-EVAL survey, 2006-2007). Multivariate models show that factors common to both non-adherence and treatment interruption include binge drinking (at the individual-level) and large hospital size (at the healthcare supply-level). Among the individual factors, financial difficulties of paying for HIV-care are the major correlates of treatment interruption [Adjusted Odds Ratio (AOR) 95% confidence interval (CI)Â =Â 11.73(7.24-19.00)]. By contrast, individual factors associated with an increased risk of non-adherence include: having a main partner but not living in a couple compared to patients living in a couple [AOR(95%CI)Â =Â 1.51(1.14-2.01)]; experience of discrimination in the family environment [AOR(95%CI)Â =Â 1.74(1.14-2.65)]; a lack of regular meals [AOR(95%CI)Â =Â 1.93(1.44-2.57)], and switching antiretroviral drugs (ARV) regimen [AOR(95%CI)Â =Â 1.36(1.08-1.70)]. At healthcare facility-level, the main correlate of ART interruption was antiretroviral stock-outs [AOR(95%CI)Â =Â 1.76(1.01-3.32)] whereas the lack of psychosocial support from specialized staff and lack of task-shifting to nurses in medical follow-up were both associated with a higher-risk of non-adherence [respective AOR (95%CI)Â =Â 2.81(1.13-6.95) and 1.51(1.00-3.40)

Measuring and decomposing socioeconomic inequality in healthcare delivery: A microsimulation approach with application to the Palestinian conflict-affected fragile settingJournal articleMohammad Abu-Zaineh, Awad Mataria, Jean-Paul Moatti and Bruno Ventelou, Social Science & Medicine, Volume 72, Issue 2, pp. 133-141, 2011

Socioeconomic-related inequalities in healthcare delivery have been extensively studied in developed countries, using standard linear models of decomposition. This paper seeks to assess equity in healthcare delivery in the particular context of the occupied Palestinian territory: the West Bank and the Gaza Strip, using a new method of decomposition based on microsimulations. Besides avoiding the 'unavoidable price' of linearity restriction that is imposed by the standard methods of decomposition, the microsimulation-based decomposition enables to circumvent the potentially contentious role of heterogeneity in behaviours and to better disentangle the various sources driving inequality in healthcare utilisation. Results suggest that the worse-off do have a disproportinately greater need for all levels of care. However with the exception of primary-level, utilisation of all levels of care appears to be significantly higher for the better-off. The microsimulation method has made it possible to identify the contributions of factors driving such pro-rich patterns. While much of the inequality in utilisation appears to be caused by the prevailing socioeconomic inequalities, detailed analysis attributes a non-trivial part (circa 30% of inequalities) to heterogeneity in healthcare-seeking behaviours across socioeconomic groups of the population. Several policy recommendations for improving equity in healthcare delivery in the occupied Palestinian territory are proposed.

Density of dental practitioners and access to dental care for the elderly: a multilevel analysis with a view on socio-economic inequality.Journal articleLaurence Lupi-Pégurier, Isabelle Clerc-Urmes, Mohammad Abu-Zaineh, Alain Paraponaris and Bruno Ventelou, Health Policy, Volume 103, Issue 2-3, pp. 160-167, 2011

To examine the relations between density of dental practitioners (DDP) and socio-economic and demographic factors shown to affect access to dental care for the elderly.

Does HIV services decentralization protect against the risk of catastrophic health expenditures?: some lessons from Cameroon.Journal articleSylvie Boyer, Mohammad Abu-Zaineh, Jérôme Blanche, Sandrine Loubiere, Cécile-Renée Bonono, Jean-Paul Moatti and Bruno Ventelou, Health services research, Volume 46, Issue 6pt2, pp. 2029-2056, 2011

OBJECTIVE: Scaling up antiretroviral treatment (ART) through decentralization of HIV care is increasingly recommended as a strategy toward ensuring equitable access to treatment. However, there have been hitherto few attempts to empirically examine the performance of this policy, and particularly its role in protecting against the risk of catastrophic health expenditures (CHE). This article therefore seeks to assess whether HIV care decentralization has a protective effect against the risk of CHE associated with HIV infection. DATA SOURCE AND STUDY DESIGN: We use primary data from the cross-sectional EVAL-ANRS

General practitioners and clinical practice guidelines: a reexamination.Journal articleBruno Ventelou, Alain Paraponaris, Isabelle Clerc, Marc-Andre Guerville and Pierre Verger, Medical Care Research and Review : MCRR, Volume 68, Issue 4, pp. 504-518, 2011

General practitioners' (GPs') use of clinical practice guidelines (CPGs) may be influenced by various contextual and attitudinal factors. This study examines general attitudes toward CPGs to establish profiles according to these attitudes and to determine if these profiles are associated with awareness and with use of CPGs in daily practice. The authors conducted a cross-sectional telephone survey of 1,759 French GPs and measured (a) their general attitudes toward CPGs and (b) their awareness and use in daily practice of CPGs for six specific health problems. A bivariate probit model was used with sample selection to analyze the links between GPs' general attitudes and CPG awareness/use. The authors found three GP profiles according to their opinions toward CPGs and a positive association between these profiles and CPG awareness but not use. It is important to build awareness of CPGs before GPs develop negative attitudes toward them.