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Re: st: many dummy variables in one variable


From   Seb Buechte <sfbuechte@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: many dummy variables in one variable
Date   Thu, 13 Oct 2005 08:55:11 +0200

Scott,

how about using -xi- instead of creating dummy variables (xi will
create dummy vars as needed)?

xi: reg y x i.industry

will do the same as

tab industry, gen(ids)
reg y x id1 ids2 ....

Kind regards,
seb

On 10/13/05, Scott Cunningham <scunning@gmail.com> wrote:
> On Oct 12, 2005, at 10:48 PM, FUKUGAWA, N. wrote:
>
> > Suppose we create dummy variables from ids1 to ids50 by writing
> > tab industry, gen(ids) ,
> > how can I include 50 dummies in the model instead of writing
> > reg y x ids1 ids2 ids3 ... ids50 ?
> > Thanks in advance.
>
> I usually do it like this:
>
> reg y x ids*
>
> So long as you don't have other variables, besides the dummies, with
> that kind of prefix (ids--), then regress y onto all fifty  dummies,
> as well as x.
>
> scott cunningham
> dept. of economics
> university of georgia
> athens, ga
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--
- Seb F Buechte
-
- Stay tuned!

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