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Re: st: access coefficients from another regression


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: access coefficients from another regression
Date   Tue, 30 Oct 2012 14:46:51 +0000

That's a good point. I didn't look at the equations, but as stated
they are just standard regressions.

Nick

On Tue, Oct 30, 2012 at 2:44 PM, Austin Nichols <austinnichols@gmail.com> wrote:
> Why are you estimating linear models with -nl-? You can use -suest- to
> compare across models if you give up -nl-.
>
> On Tue, Oct 30, 2012 at 8:43 AM,  <chw_wagner@gmx.de> wrote:
>> Dear StataList,
>>
>> my model consist of two equations x1 und x2 which I estimate seperatly using non linear least squares in Stata 12. α and β denote the estimated coefficients, y and z the variables.
>>
>> First I estimate x1 using:
>> nl (x1= {α1}*y1+ {α2}*y2 + {α3}*y3)
>>
>> Then I estimate x2 using:
>> nl (x2= {β1}*z1+ {β2*z2 + {β3}*z3)
>>
>> After the estimation I want to calculate a new coefficient γ using the coefficient α1 from the first equation and β1 from the second equation using the nlcom command, for example:
>>
>> nlcom (γ= α1/β1)
>>
>> My question is now, how can I access the coefficient α1 from the first equation x1? How would the code for the nlcom command look like?
>>
>> Thanks a lot in advance.
>>
>> Christina
>
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