Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: solving for unobserved hetereogeneity with two simultaneousequations


From   Partha Deb <[email protected]>
To   [email protected]
Subject   Re: st: solving for unobserved hetereogeneity with two simultaneousequations
Date   Thu, 20 Sep 2007 23:55:11 -0400

David,

I'm assuming that "FP clinic is located within 5 Kms of the community" is in equation 1, i.e., that is your endogenous treatment. If so, you have 2 choices that capture the spirit of what you want to do

1. Estimate a bivariate probit (-biprobit-). The advantage is that the model respects the binary nature of your dependent variables. The disadvantage is that it makes a parametric assumption about the distribution (which, of course, you did with the logit).

2. Estimate a linear simultaneous equations system (-ivregress-, -ivreg2-). It is not designed explicitly for binary variables, but is less parametric and is not inappropriate.

If you aren't thinking about endogeneity, you can use -biprobit- or -sur-.

Good luck.

Partha


Ojakaa David wrote:

I have two equations that try to control for unobserved heterogeneity.

Equation 1 (Binary logit): P(having an annual birth)= effects of individual factors + effects of community factors (for example access to FP clinics)+.....
Equation 2: (Binary logit): P(FP clinic is located within 5 Kms of the community)= effects of community characteristics + ........
What is the stata code that I should use to solve for the two equations simultaneously?

*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
--
Partha Deb
Department of Economics
Hunter College
ph:  (212) 772-5435
fax: (212) 772-5398
http://urban.hunter.cuny.edu/~deb/

Emancipate yourselves from mental slavery
None but ourselves can free our minds.
	- Bob Marley

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index