Sophie Thiébaut’s research while affiliated with French Institute of Health and Medical Research and other places

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Publications (11)


Figure 1. Comparison of real expenditures with predicted expenditures 
Table 3 : Example of transition rates for female aged 50 to 59 years old 
Table 4 . Co-variable descriptive statistics 
Table 8 . Association of predicted probabilities and observed responses 
Ageing, chronic conditions and the evolution of future drugs expenditure: A five-year micro-simulation from 2004 to 2029
  • Article
  • Full-text available

May 2013

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297 Reads

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37 Citations

S. P. Thiébaut

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The healthy ageing assumptions may lead to substantial changes in paths of aggregate health care expenditure, notably catastrophic expenditure of people at the end of the life. But clear assessments of involved amounts are not available when we specifically consider ambulatory care (as drug expenditure) generally offered to chronically-ill people. We estimate the effects of epidemiological and life expectancy changes on French health expenditure until 2029 by applying a Markovian micro-simulation model from a nationally representative database. The originality of these simulations holds in using an aggregate indicator of morbidity–mortality, capturing vital risk and making it possible to adapt the quantification of life expectancies by taking into account the presence of severe chronic pathologies. We forecast future national drugs expenditure, under different epidemiological scenarios of chronic morbidity: trend scenario, healthy ageing scenario and medical progress scenario. For the population aged 25+, results predict an increase in reimbursable drug expenditure of between 1.1% and 1.8% (annual growth rate), attributable solely to the ageing population and changes in health status.

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Une analyse microéconomique du gage patrimonial dans l'aide aux personnes dépendantes

March 2012

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135 Reads

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5 Citations

Revue Économique

A microeconomic analysis of the impact of estate recovery for long-term care 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


A microeconomic analysis of the impact of estate recovery for long-term care

January 2012

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29 Reads

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2 Citations

Revue Économique

This paper examines the possible reform of the system of aid to dependent individuals (ARA), 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. © Presses de Sciences Po. Tous droits réservés pour tous pays.


Assessing the impact of epidemiological changes on health care expenditures in France for 2025: A micro-simulation approach

March 2011

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8 Reads

Sciences sociales et santé

We propose a method for predicting the evolution of ambulatory health expenditure (i.e. non-hospital) under the effect of aging of the French population by 2025. The model includes two indicators of health status through which each agent of the database pass through microsimulation (thus creating an epidemiological dynamic at the individual level). Using an econometric model of consumption of healthcare services, we deduce the French health spending in 2025 by aggregating the representative aged population in 2025. The support chosen for the first application of the tool is the Health and Social Protection Survey (ESPS2000) of IRDES paired with the Public Insured Permanent Sample (EPAS). The topic is the impact of epidemiological changes on the amount of outpatient expenditures. These simulations were conducted for three epidemiological scenarios: a scenario of constant epidemiologic dynamic, a healthy aging scenario and a healthy aging + medical progress scenario (without taking into account the price effects).


Évaluation de l'impact des changements épidémiologiques sur la dépense de santé en France pour 2025 : approche par microsimulation

January 2011

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16 Reads

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1 Citation

Sciences sociales et santé

Assessing the impact of epidemiological changes on health care expenditures in France for 2025: a micro-simulation approach We propose a method for predicting the evolution of ambulatory health expenditure (i.e. non-hospital) under the effect of aging of the French population by 2025. The model includes two indicators of health status through which each agent of the database pass through microsimulation (thus creating an epidemiological dynamic at the individual level). Using an econometric model of consumption of healthcare services, we deduce the French health spending in 2025 by aggregating the representative aged population in 2025. The support chosen for the first application of the tool is the Health and Social Protection Survey (ESPS2000) of IRDES paired with the Public Insured Permanent Sample (EPAS). The topic is the impact of epidemiological changes on the amount of outpatient expenditures. These simulations were conducted for three epidemiological scenarios: a scenario of constant epidemiologic dynamic, a healthy aging scenario and a healthy aging + medical progress scenario (without taking into account the price effects).


Figure 1 enables the quality of predictions to be evaluated by establishing the comparison between the " real " expenditures (i.e. those coming from the database) and those which the model predicts for 2004. We then execute the model on the 2004 ESPS-EPAS survey data and simulate pharmacy based expenditures for 2004. The model respects the profile of expenditures very closely, in particular replicating the drop in expenditures after 80 years of age.  
Figure 1. Comparison of real expenditures with predicted expenditures
Table 3 : Example of transition rates for female aged 50 to 59 years old
Table 4 . Co-variable descriptive statistics
Table 8 . Association of predicted probabilities and observed responses
Ageing, chronic conditions and the evolution of future drugs expenditures

January 2010

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49 Reads

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3 Citations

The healthy ageing assumptions may lead to substantial changes in paths of aggregate health care expenditure, notably catastrophic expenditure of people at the end of the life. But clear assessments of involved amounts are not available when we specifically consider ambulatory care (as drug expenditure) generally offered to chronically-ill people. We estimate the effects of epidemiological and life expectancy changes on French health expenditure until 2029 by applying a Markovian micro-simulation model from a nationally representative database. The originality of these simulations holds in using an aggregate indicator of morbidity–mortality, capturing vital risk and making it possible to adapt the quantification of life expectancies by taking into account the presence of severe chronic pathologies. We forecast future national drugs expenditure, under different epidemiological scenarios of chronic morbidity: trend scenario, healthy ageing scenario and medical progress scenario. For the population aged 25+, results predict an increase in reimbursable drug expenditure of between 1.1% and 1.8% (annual growth rate), attributable solely to the ageing population and changes in health status


L’effet du vieillissement et de l’évolution de la morbidité sur les dépenses de médicaments remboursables en ville. Une micro simulation quinquennale (2004-2029)

January 2009

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70 Reads

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4 Citations

Nous proposons une méthode de microsimulation, mise au point par l’Inserm SE4S à partir de la littérature médicoéconomique, de l’évolution des dépenses de médicaments remboursables (en médecine de ville) sous l’effet du vieillissement et de l’évolution de l’état de santé de la population française à l’horizon 2029. À partir de l’appariement de l’Enquête sur la santé et la protection sociale (ESPS) 2004 de l’Irdes et l’Échantillon permanent d’assurés sociaux (EPAS), nous construisons 3 scenarii épidémiologiques. Nous obtenons ainsi pour les 25 ans et plus des taux de croissance annuels de dépenses en médicaments, imputables uniquement au vieillissement de la population et aux évolutions de l’état de santé, situés entre 1,14% et 1,77 %. �.



Citations (5)


... p<0.001) compared with people living at home. 15 Another recent study among 114 French elderly care facility residents showed that only 18% of them were judged to be in good health according to the Oral Health Assessment Tool, and only 9% rating their oral health to be 'good' according to the General Oral Health Assessment Index. 16 This suggests a high level of preventive and curative needs in the ageing population. ...

Reference:

Diagnostic performance of two teledentistry tools in elderly care facilities: the ONE-1 protocol for a pilot prospective diagnostic study
Comparaison du recours à un chirurgien-dentiste entre les personnes âgées institutionnalisées et celles vivant à domicile, France, 2008-2009
  • Citing Article
  • January 2013

... Afin d'identifier le rôle des différents facteurs affectant le niveau des dépenses de santé, des travaux ont exploité des données individuelles sur les consommations de soins [8,25]. Ils concluent que ce sont les éléments non démographiques qui expliquent principalement la hausse passée des dépenses. ...

L’effet du vieillissement et de l’évolution de la morbidité sur les dépenses de médicaments remboursables en ville. Une micro simulation quinquennale (2004-2029)

... El papel del envejecimiento sobre el crecimiento del gasto en medicamentos resulta por tanto una combinación de la variable demográfica y de los cambios en la utilización de medicamentos; en las proyecciones a largo plazo, los estudios para los países de la UE toman en consideración también diferentes escenarios de morbilidad en los últimos tramos de edad. Un estudio para Francia basado en modelos de micro-simulación que toman en cuenta esta metodología cuantifican el impacto del envejecimiento en el gasto en medicamentos en el 1,14% anual (Thiébaut et al. 2013). ...

Ageing, chronic conditions and the evolution of future drugs expenditures

... Micro-level models simulate the entire process from individual health behavior and health risks, such as smoking, through developing a disease up to total healthcare demand and expenditures [25][26][27][28]. These models can be used to evaluate the expected effect of changes in lifestyle or risk factors on healthcare spending and analyze the potential effect of policy interventions. ...

Ageing, chronic conditions and the evolution of future drugs expenditure: A five-year micro-simulation from 2004 to 2029

... Several theoretical models include a health production function which has two inputs: formal and informal care (Byrne et al., 2009;Pezzin et al., 1996;Pezzin and Schone, 1999;Stabile et al., 2006;Thiébaut et al., 2012;Van Houtven and Norton, 2004). However, to the best of our knowledge, this function has not received much attention in the empirical literature. ...

Une analyse microéconomique du gage patrimonial dans l'aide aux personnes dépendantes

Revue Économique