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# st: RE: mvprobit

 From "Martin Weiss" To Subject st: RE: mvprobit Date Mon, 30 Aug 2010 20:23:53 +0200

```<>

Both -mvprobit- and -triprobit- are user-written and obtained via -findit-,
we should add. Mind the FAQ re user-written material...

HTH
Martin

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nyasha Tirivayi
Sent: Montag, 30. August 2010 20:14
To: statalist@hsphsun2.harvard.edu
Subject: st: mvprobit

Hello

I am now trying to estimate a model on the effects of a food aid
program on labour market dynamics of HIV affected households. Receipt
of food aid is also an endogenous variable, while I am also trying to
deal with the initial conditions problem. I have panel data from
pre-food aid and 6 months after food aid program began. I am also
suspecting that this could involve 3 recursive simultanaeous equations
as follows:

Employment at t  =  f (foodaid, age, gender, household income, education)

Food aid =  f (age, gender, education, household income, HIV
prevalence in area, household dependency ratio, employment at t-1)

Employment at t-1  =  f (age, gender, household income, education)

I am thinking of using mvprobit or triprobit for transition analysis
controlling for initial conditions and the endogeneity of food aid. I
am especially interested in doing separate sub-group analysis e.g.
looking at the transitions for those who were employed pre-program and
those who were unemployed.

Would you kindly advise on how best to write my code for people who
made transition from unemployment to employment? How do I write the
code to specifically estimate the transition to employment conditional
on previous emplorment state? Do I include employment at t-1 in the
current employment equation as a lagged explanatory variable?

Nyasha Tirivayi
Maastricht University

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