REGIONAL VARIATION IN THE UTILISATION OF AMBULATORY SERVICES IN GERMANY
利用覆盖约90%德国人口的行政数据，研究了2008年门诊服务利用的区域差异，发现人口、健康和社会经济特征可解释29-70%的差异。
We used an administrative dataset covering approximately 90% of all Germans to investigate the determinants of regional differences in the utilisation of ambulatory services in the year 2008. There are great regional differences in Germany, in GP, specialist and psychotherapist consultations. By means of a regression model taking account of the spatial dependencies of the error terms, we can explain a considerable part of the variation in terms of differences in demography, health status and socio-economic features. In addition, we made use of data on pollutants, the supply of services and the number of hospital cases as explanatory variables, which all have a significant influence on utilisation but contribute considerably less to explaining the differences. Overall, we are in a position to explain 29-40% of the regional differences in ambulatory case numbers at the level of the 413 counties and 55-70% at the level of the 16 German states (Länder) by observable differences.