Try it with reg3:
reg3 (y1 =x1 q1 q2 q3) (q1 q2 q3 = a b c) (y2 =x1 z1 z2 z3) (z1 z2 z3 =a b c) (y3 =x1 q1 q2 q3) (q1 q2 q3 = a b c), 2SLS
test [y1]q1=[y2]z1 or whatever you wish to test. The stuff in brackets identifies which equation you are referring to.
HTH,
John.
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On 13.08.2009 07:59, Susaeta ,Andres wrote:
Hello there
I'm dealing with a simulatenous equation system like the following
one and I'm using ivreg to calculate the parameters
ivreg y1 x1 (q1 q2 q3 =a b c)
ivreg y2 x1 (z1 z2 z3 =a b c)
ivreg y3 x1 (q1 q2 q3= a b c)
I want to impose certain symmetry, for example, parameter of
q1=parameter of z1 and parameter of z2= parameter of q2. I have
tried to use the constraint option but I get a massage that
constraint option is not allowed for ivreg. Any suggestions woulde
be apprecciated!
Thanks in advance!!
Andres
--
Susaeta Larrain,Andres
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