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Re: st: Re: getting a list of dropped variables after estimation


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: getting a list of dropped variables after estimation
Date   Thu, 16 Oct 2008 09:51:02 +0100 (BST)

--- Jonah Gelbach <gelbach@gmail.com> wrote:
> Does anyone know of a built-in way to get a list of variables that
> were dropped from estimation? 

You can use -indeplist- to get a list of all independent variables, and
a list of independent variables that have not been dropped. You can use
those two to create a list of variables that have been dropped, like in
the example below. To download -indeplist- type -findit indeplist-. 

*--------- begin example --------------
sysuse auto, clear
gen domestic = !foreign
reg mpg foreign domestic

indeplist, dropped
local all `r(X)'
indeplist 
local notdropped `r(X)'

local dropped : list all - notdropped
di "`dropped'"
*---------- end example ---------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      
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