Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Two stage estimation: Can the first stage be a count model


From   TinnaLaufey Asgeirsdottir <statalist@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Two stage estimation: Can the first stage be a count model
Date   Thu, 3 Feb 2005 10:47:04 -0500

Hello fellow stata users,

I am currently using the ivreg command for a two stage least squares
estimation but am wondering how fitting it is in my case.  The
variable I am instrumenting is a count measure 0, 1, 2, 3 (number of
specific alcohol problems individuals have) and my instrument is a 0 -
1 indicator variable (daily smoker or not).  I have two questions for
you:

A)  Could it cause a problem in my estimation that the first stage
consists of an indicator explaining a 0 - 1 - 2 - 3 variable?

B)  Is there a different command that does two stage estimations with
the first stage being some type of a count model (e.g. Poisson)?

Any insights are greatly appreciated
Tinna
*
*   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 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index