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Re: st: RE: resticting the sample?


From   Daniel Egan <dp.egan@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: resticting the sample?
Date   Thu, 7 Oct 2004 14:36:33 -0400

Just my two cents - I do this on a regular basis using indicator
variables, usually heirarchically ordered indicating level (more
restrictive) of filtering

sysuse auto
gen valid_f==0
replace valid_f=1 if foreign==1
tab price if valid_f==1
gen valid_fp=valid_f
replace valid_fp=0 if price>10000
.......etc

reg blah blah if valid_fp==1

This is less useful if you are looking for on-the-fly restrictions I suppose.
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