Statalist


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

Re: st: random effects with truncreg possible


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: random effects with truncreg possible
Date   Fri, 8 Feb 2008 14:46:40 +0000 (GMT)

You can see if you can make that model work in -gllamm- downloadable
from -ssc-.

Hope this helps,
Maarten

--- Anita <anita.metzger@vtxmail.ch> wrote:

> I already use xttobit as an alternative, but I also need to estimate 
> Craggs model as it allows for different explanatory variables in the 
> selection part and in the regression part.
> 
> Maarten buis schrieb:
> > The easiest solution would be to use -xttobit-.
> >
> > Hope this helps,
> > Maarten
> >
> > --- Anita <anita.metzger@vtxmail.ch> wrote:
> >
> >   
> >> Dear Statalist Members
> >>
> >> Sorry for posting again, I learned that I didn't explain my
> problem 
> >> accurately. Sorry for any inconvenience caused.
> >> I am currently estimating a model based on Cragg ("Some
> statistical 
> >> models for Limited Dependent Variable with Application to the
> Demand
> >> of 
> >> Consumer Goods", 1971)
> >>
> >> My research topic is to compare the models used in the literature
> to 
> >> explain the allocation of bilateral ODA (official development 
> >> assistance, so money for development).
> >> So there exist countries who do not recieve ODA (value =0) and
> others
> >>
> >> do. I do have data on both. So it is not a typical truncation
> >> problem.
> >> First there is a selection equation to decide if a country gets
> ODA,
> >> I 
> >> estimate this via a Probit Model. (y1=1 if they get ODA)
> >> on a second step I estimate for all positive outcomes of the
> Probit 
> >> Model a Regression to estimate how much money they get.
> >>
> >> As I am working with a panel (different developing countries over
> >> time) 
> >> I would like to do this with random effects. For Probit there
> exists
> >> a 
> >> xtprobit command, for truncreg (command for the regressionpart) I
> >> didn't 
> >> find anything.
> >> Is there a possibility to do this?
> >> As I indicated above, I have to compare the models used in the 
> >> literature, so I have to do Cragg's Model preferably with random
> >> effects 
> >> so I can compare with other models.
> >>
> >> As a second question: is there a better way to solve the problem
> as
> >> with 
> >> truncreg? As I know, the studies used this, but it does not seem
> to
> >> fit 
> >> very well
> >>
> >> thanks a lot
> >> Anita
> >>
> >>
> >>
> >>
> >>
> >> *
> >> *   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/
> >>
> >>     
> >
> >
> > -----------------------------------------
> > Maarten L. Buis
> > Department of Social Research Methodology
> > Vrije Universiteit Amsterdam
> > Boelelaan 1081
> > 1081 HV Amsterdam
> > The Netherlands
> >
> > visiting address:
> > Buitenveldertselaan 3 (Metropolitan), room Z434
> >
> > +31 20 5986715
> >
> > http://home.fsw.vu.nl/m.buis/
> > -----------------------------------------
> >
> >
> >       __________________________________________________________
> > Sent from Yahoo! Mail - a smarter inbox http://uk.mail.yahoo.com
> >
> > *
> > *   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/
> >
> >   
> *
> *   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/
> 


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      __________________________________________________________
Sent from Yahoo! Mail - a smarter inbox http://uk.mail.yahoo.com

*
*   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