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On 7/24/07, Bidisha Sayema <> wrote:
> Dear Statalisters,
> I have done a MNL of employment status (4 choices: wage employed,
> unemployed etc) with individual specific controls eg sex, education,
> age, race etc and in the next stage with only the wage employed run
> another MNL of occupational choices (3 choices: skilled, unskilled etc)
> with controls like the first stage (not the same though). But I also
> want to do a NLOGIT while incorporating all the decisions, so there will
> be 6 choices in the bottom set (3 choices out of wage employed, 3
> remaining categories of employment status) along with the first set of 4
> alternatives. I constructed the data set and the tree is running fine
> but I was unable to run NLOGIT and was facing error message. Is it due
> to the use of common individual specific variables in both stages? But I
> need to have demographic and education variables in both stages. Any
> suggestion is highly appreciated. A simple version of the model is as
> follows:
> nlogit choice (occchoice=ageprof ageskl ageuskl agesemp ageunemp agenemp
> /*
> */ age2prof age2skl age2uskl age2semp age2unemp age2nemp)
> (empstat=ageemp2 ageemp3 ageemp4 /*
> */ age2emp2 age2emp3 age2emp4 marriedemp2 marriedemp3 marriedemp4),
> group(caseno) nolog
> Best Regards
> Bidisha
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