Statalist


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

Re: st: re: How to correct standard errors of a 2sls performed by


From   John Antonakis <john.antonakis@unil.ch>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: re: How to correct standard errors of a 2sls performed by
Date   Sat, 06 Feb 2010 07:21:42 +0100

Hi:

What if the system is non-recursive (with feedback loops) and with multiple equations, e.g.,

y = x1 + x2 + z
x1 = m1 + m2 + x2 + z
x2 = n1 + n2 + x1 + z
m1 = q1 + q2 + z
m2 = p1 + p2 + z

Here one would need reg3, but how would one ensure consistency of standard errors (in the presence of heteroskedasticity), apart from bootstrapping (and Roodman's -cmp- would not here as it is only for recursive systems)?

Thanks,
J.

____________________________________________________

Prof. John Antonakis, Associate Dean Faculty of Business and Economics
Department of Organizational Behavior
University of Lausanne
Internef #618
CH-1015 Lausanne-Dorigny
Switzerland

Tel ++41 (0)21 692-3438
Fax ++41 (0)21 692-3305

Faculty page:
http://www.hec.unil.ch/people/jantonakis

Personal page:
http://www.hec.unil.ch/jantonakis
____________________________________________________



On 06.02.2010 02:02, Kit Baum wrote:
<>
John wrote
How would one deal with systems of equations (i.e., reg3) and concurrently have heteroskedastic-robust standard errors? Would bootstrapping with reg3 just be the simplest solution?


In the absence of cross-equation constraints, just estimate each equation with single-equation methods, i.e. -ivregress- or -ivreg2- using robust or cluster-robust VCE. Nothing is lost in doing so beyond a possible gain in efficiency.

Kit

Kit Baum   |   Boston College Economics & DIW Berlin   |   http://ideas.repec.org/e/pba1.html
                              An Introduction to Stata Programming  |   http://www.stata-press.com/books/isp.html
   An Introduction to Modern Econometrics Using Stata  |   http://www.stata-press.com/books/imeus.html


*
*   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/
*
*   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   |   What's new   |   Site index