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Re: st: using estimates coefficients


From   Chiara Mussida <cmussida@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: using estimates coefficients
Date   Thu, 22 Mar 2012 09:41:19 +0100

Thanks,
The proper way of dealing with sum and products of coefficients across
different model saved by "estimate save" it is to compute the sum
and/or product in each model separately, as for example:

ge x= _b[age]* meanage, where mean age is the mean value of age in my dataset.

this will be done for each of the 7 model. At the end I will sum the
variables obtained across each model stored. I hope I will be able to
save the variables of interest into the same file.

Chiara



On 21/03/2012, Muhammad Anees <anees@aneconomist.com> wrote:
> Althoug I am not sure, I have tried this and it has worked;
>
> regress dv1=in1 in2 in3 in4
> display _b[in1]
> gen agea=-.00036117
> regress dv1=in1 in2 in3 in4
> display _b[in1]
> gen ageb=-.00036117
> gen sumab=agea+ageb
> display sumab
>
> and so on to include other coefficients from other models.
>
> I Hope this may be of help
>
> Anees
>
> On Wed, Mar 21, 2012 at 9:24 PM, Chiara Mussida <cmussida@gmail.com> wrote:
>> Dear All,
>> I run (7) different equations, simple reg command. I now have to play
>> with the coefficient estimates of each equation, _b[name]
>>
>> Each of the 7 estimates have been carried out and stored with diffrent
>> names (model1,..., model7). I now must sum the coefficients of each
>> regressors of the different models, like the sum of _b[age] for all
>> the 7 models.
>>
>> How should I compute (manually) this sum across all the models?
>> _b[age] model1 + _b[age] model2 + ... + _b[age] model7
>>
>> I will have also to include the mean values of each characteristics,
>> but for this it is enough to gen an ad hoc variable for each case.
>>
>> Thanks
>> CHiara
>>
>>
>> --
>> Chiara Mussida
>> PhD candidate
>> Doctoral school of Economic Policy
>> Catholic University, Piacenza (Italy)
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/statalist/faq
>> *   http://www.ats.ucla.edu/stat/stata/
>
>
>
> --
>
> Best
> ---------------------------
> Muhammad Anees
> Assistant Professor/Programme Coordinator
> COMSATS Institute of Information Technology
> Attock 43600, Pakistan
> http://www.aneconomist.com
>
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>


-- 
Chiara Mussida
PhD candidate
Doctoral school of Economic Policy
Catholic University, Piacenza (Italy)
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


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