> ns
(running regress on estimation sample)
command: regress D_ta D_a D_r D_p, nocons
by: year ind
Statsby groups
----+--- 1 ---+--- 2 ---+--- 3 ---+--- 4 ---+--- 5
xxxxx.......................................
.
.
. merge m:1 year ind using 123.dta
Result # of obs.
-----------------------------------------
not matched 0
matched 2,327 (_merge==3)
-----------------------------------------
. gen yhat = D_a*_b_D_a + D_r*_b_D_r + D_p*_b_D_p+_b_cons
_b_cons not found
r(111);