seems you have to use dummy variables and interaction terms with xtreg?

xreg 和普通的reg有什么不同呢？

With OLS reg, you can predict the score, so in that case, you can run reg separately and then compare the coefficients using suest.

The xtreg doesn't have that option, so the best way is to using dummy and interaction.

。。。。路过看看

求问楼主问题解决了吗？到底可以做吗？