In: Regional Science and urban economics, 2014, vol. 49, p. 242-251
The benefits of separating drug prescribing and dispensing are still unclear, in particular when drug consumption is characterized by important spillovers. We investigate the role of dispensing physicians in the consumption of antibiotics characterized by two opposite external effects: infection prevention and control, and bacterial resistance. We model the interaction between competing...
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In: The european journal of health economics, 2013, vol. 14, no. 4, p. 587-599
Because of evidence of causal association between antibiotic use and bacterial resistance, the implementation of national policies has emerged as a interesting tool for controlling and reversing bacterial resistance. The aim of this study was to assess the impact of public policies on antibiotic use in Europe using a differences-in-differences approach. Comparable data on systemic antibiotics ...
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Regulation of prescription and dispensing of antibiotics has a twin purpose: to enhance access to antibiotic treatment and to reduce inappropriate use of drugs. Nevertheless, incentives on antibiotics to dispensing physicians may lead to inefficiencies. We model the interaction between competing physicians (with and without dispensing of drugs) and patients exposed to bacterial infections when...
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Because of evidence of causal association between antibiotic use and bacterial resistance, the implementation of national policies has emerged as a interesting tool for controlling and reversing bacterial resistance. The aim of this study is to assess the impact of public policies on antibiotic use in Europe using a differences-in-differences approach. Comparable data on systemic...
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In: Journal of forecasting, 2006, vol. 25, no. 8, p. 579–600
We propose a simple class of multivariate GARCH models, allowing for time-varying conditional correlations. Estimates for time-varying conditional correlations are constructed by means of a convex combination of averaged correlations (across all series) and dynamic realized (historical) correlations. Our model is very parsimonious. Estimation is computationally feasible in very large dimensions...
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In: Energy economics, 2009, vol. 31, no. 2, p. 306-315
This study presents an empirical analysis of the cost efficiency of a sample of Swiss multi-utilities operating in the distribution of electricity, natural gas and water. The multi-utilities that operate in different sectors are characterized by a strong unobserved heterogeneity. Therefore the measurement of their performance poses an important challenge for the regulators. The purpose of...
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In: Annals of Public and Cooperative Economics, 2006, vol. 77, no. 3, p. 271–290
This paper explores the application of several panel data models in measuring productive efficiency of the electricity distribution sector. Stochastic Frontier Analysis has been used to estimate the cost-efficiency of 59 distribution utilities operating over a nine year period in Switzerland. The estimated coefficients and inefficiency scores are compared across three different panel data models....
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A general result of information theory is that asymmetric information generates agent rents and distortions in production. In this paper, we analyse the impact of asymmetric information on adoption and use of information technology (IT). Depending on the conctracting scheme, different results may occur. We explore the differences between the case of contractible investment and the case of...
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In this paper we have examined the scale and cost efficiency of Italian and Swiss regional bus companies. For this purpose, we have used the estimation of a frontier cost model using a fixed effect approach. Two translog cost frontier models were specified and estimated using panel data. The first model was estimated for a sample of 58 Italian bus companies, whereas the second model was estimated...
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This paper examines the productive efficiency of the hospital sector in Switzerland. A panel data of 214 general hospitals over the four-year period between 1998 and 2001 has been analyzed. A descriptive analysis of the data casts some light on differences across hospital types especially regarding case mix severity and length of hospitalizations. The final sample used for the cost frontier...
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