余英 发表于 2021-7-11 21:08 
您好,请问stata命令是什么呀
xsmle y x a , fe model(sdm) wmat(W)type(both)nolog noeffects
est store both
xsmle y x al, fe model(sdm) wmat(W)type(ind)nolog noeffects
est store ind
xsmle y x al, fe model(sdm) wmat(W)type(time)nolog noeffects
est store time
lrtest both ind ,df()
lrtest both time,df()
还有刚刚找不到可以在你回复下回复的按键,不小心点成了踩👎,非常抱歉wuwuwu