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st: Finding individuals that had the same ranking across choices.


From   "sanja_lutzeyer@ncsu.edu" <slutzey@ncsu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: Finding individuals that had the same ranking across choices.
Date   Tue, 27 Nov 2012 12:01:25 -0500

Hi all.
I have an exploded dataset (choice experiment) where every individual
has 8 choices, each of which has 3 alternatives. Respondents are asked
to rank the alternatives (that have different levels of attributes)
from  to 3.
As such, I have 24 observations for most individuals (some individuals
only answered 6 or 7 questions and so only have 18 or 21
observations.)
I want to find those individuals that always answered in the same rank
order (independent of the levels of attributes offered). For example,
they always ranked alternative 1 = 2 alternative 2 = 3 and alternative
3 = 1.
How would I go about coding this in STATA?
Any help would be much appreciated.
Kind regards
Sanja
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