你好 想问下为什么跑代码的时候都是会卡在“采用修正的最小二乘虚拟变量法(LSDVC)估计模型”这一步
显示i.year _Iyear_2000-2020 (naturally coded; _Iyear_2000 omitted)
Note: Bias correction initialized by Arellano and Bond estimator
note: _Iyear_2002 dropped because of collinearity
in the LSDV regression
显示i.year _Iyear_2000-2020 (naturally coded; _Iyear_2000 omitted)
Note: Bias correction initialized by Arellano and Bond estimator
note: _Iyear_2002 dropped because of collinearity
in the LSDV regression