Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Constrained Regression


From   vikramfinavker <vikramfinavker@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Constrained Regression
Date   Thu, 11 Aug 2011 08:09:56 -0700 (PDT)

Hi, 

can some one please advise me how can i run a regression which is
constrained to other variable. 

e.g. i am trying to run following regression. 
y = ∝ + βx1+ βx2+βx3+bx5 +ui which is constrained to variable x6 

my data for x1 and x6 are like this; 

x1              x6 
123423        1 
134343        1 
234234        0 
555454        1 
664543        0 
767677        0 
0                0 
.                 0 
0                1 
.                 1
12323        0 

now i want to tell stata that is should use all observations of x1 where its
grater than zero (x1>0) and select observations from 0 & missing (.) if x6
is 0. 
 so i want stata to select following observations 

x1              x6 
123423        1 
134343        1 
234234        0 
555454        1 
664543        0 
767677        0 
0                0 
.                 0 
12323        0 

If my question is not clear, please let me know. 

Thanks a lot.

--
View this message in context: http://statalist.1588530.n2.nabble.com/Constrained-Regression-tp6676738p6676738.html
Sent from the Statalist mailing list archive at Nabble.com.

*
*   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/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index