This paper presents a preliminary econometric analysis on how different alternative plans affect the utilization of health care services in Switzerland. The data come from the 1992-1993 Swiss health Survey (SHS). We briefly describe some institutional aspects of the Swiss health system which...

The purpose of this paper is to derive a Rao's efficient score statistic for testing for heteroscedasticity in an error components model with only individual effects. We assume that the individual effect exists and therefore do not test for it. In addition, we assume that the individual effects,...