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st: Nested Logit


From   Patricia Yu <[email protected]>
To   [email protected]
Subject   st: Nested Logit
Date   Mon, 04 May 2009 12:28:48 -0500

Dear STATA Users,

I will run the nested logit model.
My dependent variable (DV) has four sub-categories which are nested in two
big categories:

Category1: 
sub-category11
sub-category12
Catergory2:
sub-category21
sub-category22

I have several independent variables (IV): IV1, IV2, IV3, IV4, IV5, IV6,
IV7, ...
I assume that IV1, IV2, IV3 will not only influence category1 vs. category2,
but also influence the type of subcategory.

Could I repeat IV1, IV2, IV3 in the nlogit model, as follows?

nlogit chosen ||category_1_2: IV1 IV2 IV3, base(1) || type: IV1 IV2 IV3 IV4
IV5 IV6 IV7, case(id)

Is it correct to repeat several independent variables in predicting both the
large categories and the sub-categories?

Thank you very much.

Sincerely,
Patricia

*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
PATRICIA YU
Ph.D. Student & Project Assistant
Dept. of Educational Leadership & Policy Analysis
University of Wisconsin-Madison
Cell: 608/698-8108
Home: 608/231-6855
E-mail: [email protected]
*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*




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