langquchao 发表于 2019-1-7 21:53 
不好意思,老师,我再详细描述一下。我的数据是面板数据,用的是固定效应模型,我有一个解释变量是内生变 ...
请看看 Baum, C. F., Schaffer, M.E., and Stillman, S. 2007. Enhanced routines for instrumental variables/GMM estimation and testing. The Stata Journal, Vol. 7, No. 4, pp. 465-506.