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This paper studies a number of stochastic cost frontier models comparing their ability to distinguish unobserved heterogeneity from inefficiency variation among firms. The main focus is on the panel data models that incorporate firm-specific effects in a stochastic frontier framework, as proposed by Greene (2002, 2004). In cases where the unobserved heterogeneity is correlated with some of the...
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This paper examines the performance of several panel data models to measure cost and scale efficiency in network industries. Network industries are characterized by a high degree of heterogeneity, much of which is network-specific and unobserved. The unaccounted-for heterogeneity can create bias in the inefficiency estimates. The stochastic frontier models that include additional firm-specific...
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Switzerland (7.2 million inhabitants) is a federal state composed of 26 cantons. Article 3 of the Federal Constitution grants ample autonomy to individual cantons in those sectors that are not directly regulated by the Constitution, among others health and social care. The autonomy of cantons creates strong heterogeneity in terms of regulatory systems and the organization of health care services....
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This paper investigates regional variations in outpatient antibiotic use and provides a first empirical analysis based on Swiss data. We compare Swiss antibiotic consumption with antibiotic use in other European countries and present descriptive statistics at cantonal level. Preliminary findings show that Switzerland exhibits relatively low levels of consumption. There are significant...
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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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This paper investigates the determinants of regional variations in outpatient antibiotic consumption using Swiss data. The analysis contributes to the debate on appropriate antibiotic use by improving the understanding of its determinants, and may help to define more effective health care policies to reduce the resistance phenomenon. Findings suggest that Switzerland exhibits relatively low...
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