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

[Richard Williams <Richard.A.Williams.5@nd.edu>]

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.


-------------------------------------------
Richard Williams, Associate Professor
OFFICE: (574)631-6668, (574)631-6463
FAX:    (574)288-4373
HOME:   (574)289-5227
EMAIL:  Richard.A.Williams.5@ND.Edu
WWW (personal):    http://www.nd.edu/~rwilliam
WWW (department):    http://www.nd.edu/~soc


*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/