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st: RE: resticting the sample?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: resticting the sample?
Date   Wed, 6 Oct 2004 22:59:18 +0100

gen mysample = (age < 40) & (nobel_prize == 1) & (extrasensoryperception == 1) 

...

reg ... if mysample 

See also http://www.stata.com/support/faqs/data/trueorfalse.html

Nick 
n.j.cox@durham.ac.uk 

> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Shuaizhang
> Feng
> Sent: 06 October 2004 22:53
> To: statalist@hsphsun2.harvard.edu
> Subject: st: resticting the sample?
> 
> 
> Dear all:
> 
> I want to restrict my sample first and then use the
> resticted sample in my regressions. Is there a compact
> way to do this.
> 
> for example, I want to run regression on age<40. but I
> don't want to add "if age<40" for every regressions I
> do, as it would be too long ( I have a bunch of other
> stuffs). is there an alternative way to do this?
> 
> Thanks a lot in advance.
> 
> shuaizhang 
> 
> 
> 		
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