st: Constant Coefficient

["ALICE DOBSON" <alice_dobson@hotmail.com>]

Dear Statalisters,
can I estimate an equation by holding the value of a coefficient for one of 
the variables constant at 1.0?
Basically, I split the error term (e_it) into two components - true error 
(u_it) and a systemic component (r_it). I then plug the value of the 
systemic component. I then run the regression.
However, to do so I need to assume that the coefficient of r_it is 1.0.

Best,
Alice

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