One way would be to simply add a few dummy variables for varying levels of
development:
regress ln_fdi ln_ip ln_rn ln_ti dummy_poor dummy_middle_income
Of course, depending on your number of observations, the dummies can be
more nuanced. This has the advantage over simply "controlling for income"
that it doesn't impose a specific functional form on the effect of income.
D
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On Thu, 11 Nov 2004, Rozilee Asid wrote:
> Dear statalister
>
> How to control for specific variable in stata regression command for example
> my model is look like this
> ln_fdi = alpha0+alpha1.ln_ip+alpha2.ln_rnd+alpha3.ln_ti and I want to
> control for level of countries development in my equation.
>
> Hope someone could help me in this matter.
>
> Thank you
>
> Rozilee
>
>
> *
> * For searches and help try:
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> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
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* http://www.ats.ucla.edu/stat/stata/
