Re: st: cmp command with bivariate probit model and hierarchical dataset

["Bartus Tamás" <tamas.bartus@uni-corvinus.hu>]

Dear Fatma,
 
 Tip 1. If hh_id is household ID,  then your syntax is wrong, and you should type
 
cmp (work = $all_Xs || region_id:  || hh_id:) (school= $all_Xs || region_id || hh_id: ), ind($cmp_probit $cmp_probit) nolr
 

The rule is: first region, then households within region
 
Tip 2. You might begin with fitting the single level model 
 
cmp (work = $all_Xs ) (school= $all_Xs ), ind($cmp_probit $cmp_probit) nolr 
 
as well as the empty multilevel model
 
cmp (work = || hh_id: || region_id:) (school= || hh_id: || region_id), ind($cmp_probit $cmp_probit) nolr
 
to see what goes wrong. 
 
 
If the single level model fails to converge, you should perhaps change the model specification so that the explanatory
variables in the work and the school equations do not overlap.
 
If these do not help, you should tell more about your data and variables.
 
Hope this helps,
 
Tamas
 
On 13/11/24, Fatma M Romeh <fromeh1@student.gsu.edu> wrote: 
> Dear statalist,
> 
> I have a small question about your -cmp- command. I'm trying to fit hierarchical/random effects bivariate probit model to model school and work decisions jointly. There are three levels (individuals, households, and regions). I have independent variables at each of these levels and the set of these independent variables are similar for school and work equations. I read the -cmp- manual and tried a lot to fit the model, but I'm really having difficulty with that. Stata keeps ruining forever. I thought I might write it wrong. simply, this is what I'm typing:
> 
> 
> cmp (work = $all_Xs || hh_id: || region_id:) (school= $all_Xs || hh_id: || region_id), ind($cmp_probit $cmp_probit) nolr
> 
> 
> I'm new to the -cmp- command and would really appreciate any help on how to correctly write the syntax for my mode.
> 
> 
> Thank you in advance,
> 
> Fatma,
> 
> 
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
> 
> 
--

Tamás Bartus, PhD
Associate Professor, Deputy Director
Institute of Sociology and Social Policy
Program Director, Doctoral School of Sociology
Corvinus University, Budapest 
1093 Budapest, Közraktár utca 4-6.
Room 424.
Phone: +36-1-482-7301 
Fax: +36-1-482-7348
Homepage: http://web.uni-corvinus.hu/bartus

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/