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Re: st: RE: logistic regression: changing a coefficient


From   Richard Williams <Richard.A.Williams.5@nd.edu>
To   statalist@hsphsun2.harvard.edu, statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: logistic regression: changing a coefficient
Date   Tue, 15 Feb 2005 12:31:29 -0500

At 12:20 PM 2/15/2005 -0500, Richard Williams wrote:

Well, how about something like

. sysuse auto
(1978 Automobile Data)

. qui logit fore mpg weight

. predict xb, xb

. gen xb2 = xb - _b[mpg]*mpg +  -.35*mpg
Or, in the interest of algebraic simplicity,

. gen xb3 = xb + (-.35 - _b[mpg]) * mpg

The part in parentheses is the coefficient you want minus the coefficient you want to change. My two approaches and Scott's approach all produce identical values.


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Richard Williams, Associate Professor
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