Health care reform and the number of doctor visits—an econometric analysis
利用德国社会经济面板数据（1995-1999年），通过计数数据模型评估1997年医疗改革对个人医生就诊次数的影响，发现改革使就诊次数总体减少10%，且对低就诊次数人群影响更大。
Abstract This paper evaluates the German health care reform of 1997, using the individual number of doctor visits as outcome measure and data from the German Socio‐Economic Panel for the years 1995–1999. A number of modified count data models allow us to estimate the effect of the reform in different parts of the distribution. The overall effect of the reform was a 10% reduction in the number of doctor visits. The effect was much larger in the lower part of the distribution than in the upper part. Copyright © 2004 John Wiley & Sons, Ltd.