Summary In all health care systems exists governmental regulation, as the market for health is unanimously regarded as imperfect. The German health care market is a good example for a strongly regulated market in nearly each submarket, partially the determination of prices. Reimbursement of...

Summary The demographic, technological and economic changes in Germany require a profound reform of the health care system, especially concerning the ambulant medical care. For many years too strict legal regulations prohibited the development of adequate care structures; the major reform of...

Abstract In economic applications it is often the case that the variate of interest is non-negative and its distribution has a mass-point at zero. Many regression strategies have been proposed to deal with data of this type but, although there has been a long debate in the literature on the...

Abstract In this paper, we investigated the utility of data mining to classify individuals into predefined categories of a target variable, based on their social and political attitude. Data collected for a social psychology study conducted in Greece in 1994 were used for this purpose. We...