Wang Zijun, Rettenmaier Andrew J
Private Enterprise Research Center, Texas A&M University, College Station, TX 77843-4231, USA.
Health Econ. 2007 Jun;16(6):559-78. doi: 10.1002/hec.1182.
Utilizing a panel data set of 50 US states, this note investigates nonstationarity and cointegration of health care expenditures and gross state products (GSP). Both the individual state-based method and the recent panel data method are applied. Allowing for structural breaks in the test, we find that health care expenditures and GSP are both nonstationary. The evidence also suggests that the two series form a cointegrating relationship. The income elasticities of health spending vary over states and became smaller in the 1990s.
利用美国50个州的面板数据集，本笔记研究了医疗保健支出与州生产总值（GSP）的非平稳性和协整关系。我们同时应用了基于单个州的方法和最新的面板数据方法。在检验中考虑到结构突变，我们发现医疗保健支出和GSP都是非平稳的。证据还表明这两个序列形成了协整关系。医疗支出的收入弹性因州而异，并且在20世纪90年代变小了。
