Ventelou

Publications

Indicators show differences in antibiotic use between general practitioners and paediatricians.Journal articleCéline Pulcini, Caroline Lions, Bruno Ventelou and Pierre Verger, European Journal of Clinical Microbiology & Infectious Diseases, Volume 32, Issue 7, pp. 929-935, 2013

The purpose of this investigation was to adapt to an individual physician level and to the paediatric context a set of drug-specific indicators of outpatient antibiotic use developed by the European Surveillance of Antimicrobial Consumption (ESAC) project, and to describe the differences in antibiotic prescriptions between general practitioners (GPs) and paediatricians. We conducted a retrospective cross-sectional study analysing antibiotic prescriptions in 2009 for children below 16 years of age in south-eastern France, using the National Health Insurance (NHI) outpatient reimbursement database. A generalised linear model adjusted on physicians' characteristics and patient population characteristics was used to compare indicators between GPs and paediatricians. We included 4,921 self-employed GPs and 301 paediatricians. Penicillins accounted for 47% and 45% of all antibiotics prescribed by GPs and paediatricians, respectively, followed by cephalosporins (33% and 39%) and macrolides (14% and 9%). In both specialties, there were around 70% more antibiotic prescriptions during the winter quarters compared to the summer quarters. The 13 indicators we calculated showed wide variations in antibiotic prescriptions among GPs, among paediatricians, and between GPs and paediatricians. In an adjusted econometric model, GPs were found to issue 54% more antibiotic prescriptions than paediatricians, whereas paediatricians used a significantly higher proportion of co-amoxiclav (18% vs. 12%) and cephalosporins (39% vs. 33%) and a significantly lower proportion of macrolides (9% vs. 14%) compared to GPs. A set of 13 indicators may be calculated using reimbursement data to describe outpatient antibiotic use at the physician level. We observed very different prescribing profiles between GPs and paediatricians.

Sex-based differences in income and response to proposed financial incentives among general practitioners in France.Journal articleWilliam B. Weeks, Alain Paraponaris and Bruno Ventelou, Health Policy, Volume 113, Issue 1-2, pp. 199-205, 2013

Women represent a growing proportion of the physician workforce, worldwide. Therefore, for the purposes of workforce planning, it is increasingly important to understand differences in how male and female physicians work and might respond to financial incentives. A recent survey allowed us to determine whether sex-based differences in either physician income or responses to a hypothetical increase in reimbursement exist among French General Practitioners (GPs). Our analysis of 828 male and 244 female GPs' responses showed that females earned 35% less per year from medical practice than their male counterparts. After adjusting for the fact that female GPs had practiced medicine fewer years, worked 11% fewer hours per year, and spent more time with each consultation, female GPs earned 11,194euro, or 20.6%, less per year (95% CI: 7085euro-15,302euro less per year). Male GPs were more likely than female GPs to indicate that they would work fewer hours if consultation fees were to be increased. Our findings suggest that, as the feminization of medicine increases, the need to address gender-based income disparities increases and the tools that French policymakers use to regulate the physician supply might need to change.

Cross-sectional survey: risk-averse French GPs use more rapid-antigen diagnostic tests in tonsillitis in childrenJournal articleAudrey Michel-Lepage, Bruno Ventelou, Antoine Nebout, Pierre Verger and Céline Pulcini, BMJ open, Volume 3, Issue 10, 2013

OBJECTIVES: We tested the following hypotheses: (1) risk-averse general practitioners (GPs) might use more Rapid Antigen Diagnostic Tests (RADTs) in tonsillitis in children, probably to decrease their diagnostic uncertainty regarding the aetiology of the disease (viral vs due to group A Streptococcus); and (2) GPs not using RADT might prescribe more antibiotics when they are risk averse. DESIGN, SETTING AND PARTICIPANTS: We conducted a cross-sectional survey of a nationwide French representative sample of 1093 GPs in 2012. OUTCOME MEASURES: Multivariate analyses adjusted on the four stratification variables (age, gender, location and volume of activity, ie, the number of annual consultations) were performed to identify the risk domains associated with indicators of good or poor practice. RESULTS: 69.4% of GPs were aware of national guidelines regarding tonsillitis and declared that they had taken these guidelines into account for their last paediatric tonsillitis case. 59.1% declared they used RADT in their last patient aged between 3 and 16 years presenting with tonsillitis; 29.7% of these tests were positive. Among the GPs who used RADT, 30.7% prescribed an antibiotic; 98.3% did either prescribe an antibiotic because of a positive RADT result, or did not prescribe an antibiotic in view of a negative result. Among the GPs who did not use RADT, 50.7% prescribed an antibiotic. In multivariate analyses, risk-averse GPs declared being more aware of and compliant with guidelines (OR=1.56, p<0.01), and used RADTs more often for their last patient (OR=1.30, p<0.05). Among GPs not using RADT in their last patient, risk-averse GPs prescribed more antibiotics compared with risk-tolerant doctors (OR=1.18, p<0.05). CONCLUSIONS: Individual risk attitudes influenced GPs' practices in tonsillitis, particularly the use of RADTs and antibiotic prescriptions.

Appraising financial protection in health: the case of TunisiaJournal articleMohammad Abu-Zaineh, Habiba Ben Romdhane, Bruno Ventelou, Jean-Paul Moatti and Arfa Chokri, International Journal of Health Care Finance and Economics, Volume 13, Issue 1, pp. 73-93, 2013

Despite the remarkable progress in expanding the coverage of social protection mechanisms in health, the Tunisian healthcare system is still largely funded through direct out-of-pocket payments. This paper seeks to assess financial protection in health in the particular policy and epidemiological transition of Tunisia using nationally representative survey data on healthcare expenditure, utilization and morbidity. The extent to which the healthcare system protects people against the financial repercussions of ill-health is assessed using the catastrophic and impoverishing payment approaches. The characteristics associated with the likelihood of vulnerability to catastrophic health expenditure (CHE) are examined using multivariate logistic regression technique. Results revealed that non-negligible proportions of the Tunisian population (ranging from 4.5 % at the conservative 40 % threshold of discretionary nonfood expenditure to 12 % at the 10 % threshold of total expenditure) incurred CHE. In terms of impoverishment, results showed that health expenditure can be held responsible for about 18 % of the rise in the poverty gap. These results appeared to be relatively higher when compared with those obtained for other countries with similar level of development. Nonetheless, although households belonging to richer quintiles reported more illness episodes and received more treatment than the poor households, the latter households were more likely to incur CHE at any threshold. Amongst the correlates of CHE, health insurance coverage was significantly related to CHE regardless of the threshold used. Some implications and policy recommendations, which might also be useful for other similar countries, are advanced to enhance the financial protection capacity of the Tunisian healthcare system.

The macroeconomic consequences of renouncing to universal access to antiretroviral treatment for HIV in Africa: a micro-simulation model.Journal articleBruno Ventelou, Yves Arrighi, Robert Greener, Erik Lamontagne, Patrizia Carrieri and Jean-Paul Moatti, PLoS ONE, Volume 7, Issue 4, pp. e34101, 2012

AIM: Previous economic literature on the cost-effectiveness of antiretroviral treatment (ART) programs has been mainly focused on the microeconomic consequences of alternative use of resources devoted to the fight against the HIV pandemic. We rather aim at forecasting the consequences of alternative scenarios for the macroeconomic performance of countries. METHODS: We used a micro-simulation model based on individuals aged 15-49 selected from nationally representative surveys (DHS for Cameroon, Tanzania and Swaziland) to compare alternative scenarios : 1-freezing of ART programs to current levels of access,

Une analyse microéconomique du gage patrimonial dans l'aide aux personnes dépendantesJournal articleSophie P. Thiébaut, Bruno Ventelou, Cecilia Garcia-Peñalosa and Alain Trannoy, Revue Économique, Volume 63, Issue 2, pp. 339-372, 2012

This paper examines the possible reform of the system of aid to dependent individuals (apa), a reform aimed at recovering the subsidies awarded from the individual?s bequest. We develop a theoretical model with a dependent parent and an offspring that can potentially act as informal carer. The parent decides how much formal aid to buy, while the offspring decides how much informal care to provide to her parent. The model is solved for three cases: no altruism, altruism from bequests (towards a surviving spouse or offspring), and altruism towards the parent. We show that recovering the subsidy from the bequest increases the amount of informal aid supplied by a non-altruist offspring, while the versions with altruism yield ambiguous results. Classification JEL : D11, D3

HIV/AIDS-GDP Nexus? Evidence from panel-data for African countriesJournal articleArshia Amiri, Ulf-G Gerdtham and Bruno Ventelou, Economics Bulletin, Volume 32, Issue 1, pp. 1060-1067, 2012

To test potential bilateral causalities relation between HIV-AIDS mortality and GDP, we propose a simple Granger noncausality test for heterogeneous panel data models. 44 African countries are selected for annual pooled data from 1990 to 2009. Results are presented for the heterogeneous noncausality hypothesis (HENC), which tests, for each cross-section unit, the nullity of all the coefficients of the lagged explanatory variable. Bilateral causality relation is observed for 5 countries out of 44 (11% of the countries in our data set). We have 18 countries of unidirectional causality, which 14 are from HIV mortality rate to GDP (43% from total), and 4 are from GDP to HIV mortality rate (9% from total). These results alert for the risk of epidemic trap, initiated first by the deleterious effect of HIV-Aids on countries income.

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).

Perceptions and attitudes of French general practitioners towards rapid antigen diagnostic tests in acute pharyngitis using a randomized case vignette studyJournal articleCéline Pulcini, Laure Pauvif, Alain Paraponaris, Pierre Verger and Bruno Ventelou, Journal of Antimicrobial Chemotherapy, Volume 67, Issue 6, pp. 1540-1546, 2012

Objectives This study had three objectives: (i) to assess the use of rapid antigen diagnostic tests (RADTs) and their impact on the antibiotic prescribing behaviour of general practitioners (GPs) for acute pharyngitis; (ii) to study the barriers to the use of RADTs; and (iii) to identify GPs' characteristics associated with non-compliance with French guidelines.Methods We conducted a cross-sectional survey of a representative sample of 369 self-employed GPs in south-eastern France using a randomized case vignette study.Results The availability of an RADT allowed a 44% relative reduction in the rate of antibiotic prescriptions. Of GPs for whom the test was available, 34% did not use an RADT in our acute pharyngitis vignette and 13% of those who used the test prescribed an antibiotic despite a negative RADT result. Non-compliance with French guidelines (i.e. not using an RADT and/or prescribing an antibiotic despite a negative RADT result) was independently associated with the following factors: less reading of medical journals, less benefits/risks discussion with patients about vaccinations and higher perception that clinical examination was sufficient to prescribe antibiotics. The three main declared barriers to RADT use were: time to perform the test, patient expectations regarding antibiotics and the perception that clinical examination was sufficient to decide to prescribe an antibiotic.Conclusions RADTs are a useful but not sufficient tool to reduce antibiotic prescribing in general practice. The results of this study increase understanding of the factors underlying clinical decision making for acute pharyngitis and may contribute to the development of interventions to improve practice.

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.