R: Re: st: interaction variables

Dimitri and Nick,

Thank you very much for your help!

Best Regards

Daniele

Il 15/04/11, "Dimitriy V. Masterov" <[email protected]> ha scritto:

Daniele,

If you have Stata 11, you can just add a term to your regression like
this using factor variables:

reg y x1 x2 i.country##i.time

This will include both country and time dummies as well as their
interaction in your specification. If you just want the interaction,
use only one #.

DVM
On Fri, Apr 15, 2011 at 12:20 PM, daniele.curzi <[email protected]> wrote:
> Dear Stata Members, I have to generate interaction variables between a
> country dummy and a time variable!
>
> I have a dataset with 50 countries. So using the tabulate command I get 50
> dummy variables (country1, country2,....country 50). Now I want to multiply
> all these variables for a time variable! In this case I will generate 50 new
> variables!
>
> To do that, I can multiply each country dummy for the time variable.
>
> gen cy1=country1*year
>
> gen cy2=country2*years
>
> ....
>
> gen cy50=country50*years
>
> I was wondering if there exist any command to make this in a faster way!
>
> Thanks for your help
>
> --
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From	Daniele Curzi <[email protected]>
To	[email protected]
Subject	R: Re: st: interaction variables
Date	Fri, 15 Apr 2011 23:22:22 +0200

Stata: Data Analysis and Statistical Software

R: Re: st: interaction variables