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st: econometric analysis of proportions


From   ACavallo@lexecon.com
To   statalist@hsphsun2.harvard.edu
Subject   st: econometric analysis of proportions
Date   Wed, 20 Aug 2003 22:11:44 -0500




I am interested in tracking changes in proportions over time and testing
for trend effects.  I have a categorical variable with 11 categories that
is measured in aggregate data annually.  I want to do some tests for
positive or negative trends in the shares in the categories.  I know the
count of cases in each category and year and the overall annual total.
Does anyone have suggestions on how I can model this?


Regards,

--Alex Cavallo
Lexecon
(312) 322-0208  voice
(312) 322-0218  fax

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