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From |
Nick Cox <[email protected]> |

To |
[email protected] |

Subject |
Re: st: access coefficients from another regression |

Date |
Tue, 30 Oct 2012 12:56:11 +0000 |

You need to save the estimate from the first model before you fit the second. For example, a convenient method is to copy estimates to a matrix: . mat b = e(b) . mat li b On Tue, Oct 30, 2012 at 12:43 PM, Christina <[email protected]> wrote: > 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? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

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