[Limdep Nlogit List] A selection qeustion--a quick follow-up

[Christer.Thrane at hil.no]

Hi,

If the the second "choice" involves three outcomes (and not two) - that 
is, if you have a multinomial regression model with sample selection (and 
only indeps describing the choosers) - how do I estimate this?

My own suggestion thus far is:

1. Estimate selection equation with probit or logit

2. Obtain Inverse Mills' Ratio, IMR, from 1.

3. Add IMR to the list of indpendent variables in the multinomial 
regressinon using robust SE's

Is this reasonable? 

BR

Christer

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Professor Christer Thrane <christer.thrane at hil.no>
Lillehammer University College
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Norway 
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William Greene <wgreene at stern.nyu.edu> 
Sent by: limdep-bounces at limdep.itls.usyd.edu.au
18.10.2007 02:17
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Re: [Limdep Nlogit List] A selection qeustion





Dear Professor Tchetchik:  The "Bivariate Probit with Selection" model 
that
you describe below has been available in LIMDEP for many years.  The 
program
contains a full information maximum likelihood estimator.  You can find
discussion of the model in my textbook, Econometric Analysis, in the
chapter on discrete choice models.
Sincerely,
William Greene, developer.

--
Professor William Greene
Department of Economics
Stern School of Business
New York University
44 West 4th St., Rm. 7-78
New York, NY   10012
http://www.stern.nyu.edu/~wgreene
212.998.0876

----- Original Message -----
From: "Dr. Anat Tchetchik" <manes at agri.huji.ac.il>
To: Limdep at limdep.itls.usyd.edu.au
Sent: Wednesday, October 17, 2007 9:52:04 AM (GMT-0500) America/Bogota
Subject: [Limdep Nlogit List] A selection qeustion

Hi  All,



We want to run a selection model which resemble the sample selection one 
but
the second equation is not a regression one, rather it is also a probit (a
"yes/no" decision that depends on a realization of "yes" on the first 
probit
equation). Any idea how to handle it? Does Limdep have a code for that?



Thanks in advance for any help



Anat Tchetchik, Ph.D.

The Department of Agricultural Economics

The Hebrew University of Jerusalem

Tel: 08-9489231

cell: 054-4928740





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