-----Ursprüngliche Nachricht-----
Von: Ariel Linden,
> I saw your posting the other day in which you used indeplist as a way of
> checking why some variables were dropped from the xtreg model. I just
> read through the help file for indeplist and wasn't sure how to apply it
> to see which variables are dropped because of colinearity.
-indeplist- leaves behind a list of variables that where included in your
model. If you store all explanatory variables in a local, and than remove
the variables that where not dropped from that list, than what is left
are the variables that where dropped. You can "subtract" two lists using
the -list- extended macro function, see the -help macrolists- and the
example below:
*-------- begin example ------------
sysuse auto, clear
gen domestic = !foreign
local all "foreign domestic"
reg mpg `all'
indeplist, local
local dropped : list all - X
di "`dropped'"
*--------- end example --------------
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
