This is a bit of a shot in the dark...
I have interacted variables in a regression that I want to compare using
lincom (or test) and wanted to know if there was a shorthand way to recall
the variables. The difficulty is that a number of the names of the
variables are quite long (and not something I can change), so having a
shorthand way to get at their coefficients and their se would be preferred.
For example, say I had this:
*==================================================
sysuse auto, clear
g long_name_a=round(runiform())+1
g long_name_b=round(2*runiform())+1
areg price mpg i.long_name_a#ib3.long_name_b, abs(foreign)
matrix list e(b)
* I can access the stored results of the variables like this
lincom 1b.long_name_a#1.long_name_b-2.long_name_a#1.long_name_b
*but I hoped that I could get at the same via some matrix notation from e(b)
*====================================================
Admittedly I am a novice in how to work with matrices but I thought I would
try the list.
Thanks, in advance,
Ben
Ben Hoen
Principal Research Associate
Lawrence Berkeley National Laboratory
Office: 845-758-1896
Cell: 718-812-7589
bhoen@lbl.gov
http://emp.lbl.gov/staff/ben-hoen
Visit our publications at:
http://emp.lbl.gov/publications
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/
