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st: Operators in -reg- or -xtreg-

From   Hobst <>
Subject   st: Operators in -reg- or -xtreg-
Date   Thu, 12 Aug 2010 08:51:16 -0700 (PDT)


Is it somehow posible to use operators directly inside the regression code?

for example -xtreg y x (x)^2 , fe didnt work

do i always need to generate a new variable first?

gen x2=x^2
xtreg y x x2, fe

Thanks for your help

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