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Re: st: specify base year for interacted factor variable.


From   brendan.halpin@ul.ie (Brendan Halpin)
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: specify base year for interacted factor variable.
Date   Thu, 17 May 2012 21:30:56 +0100

On Thu, May 17 2012, Daifeng He wrote:

> . xtreg y   ib1999.year#c.x  i.year,  i(id) fe

Does the problem also arise with 

. xtreg y   ib1999.year#c.x  ib1999.year,  i(id) fe

or (perhaps you have a reason for not including the first order effect
of x)

. xtreg y   ib1999.year##c.x,  i(id) fe


Brendan
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