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Re: st: on-the-fly indicator at cutpoints of continuous variable


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: on-the-fly indicator at cutpoints of continuous variable
Date   Tue, 20 Nov 2012 15:56:43 +0000

You can do something close to this in -nl-, but you would need to do
it differently.

Nick

On Tue, Nov 20, 2012 at 3:44 PM, Hoffman, George <ghoffman@mcw.edu> wrote:

> I'd like to model the following:
>                 reg Y  c.x1 c.x2 i.x3
> where i.x3 takes on a value of 1 if x3<k, otherwise 0
>
> this does not work:
>                 reg Y c.x1 c.x2 i.(x3<k)
>
> it is simple to create an indicator variable and include that in the regression, but is there a way to include an on-the-fly indicator in commands?
>
> Apparently this is 'easy' in R. is there an equivalent in Stata?
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