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st: Identifying differences in partial duplicates


From   David Puddicombe <david.puddicombe@npeu.ox.ac.uk>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: Identifying differences in partial duplicates
Date   Fri, 17 Dec 2010 16:01:37 +0000

I am working with a dataset which contains 80,000 observations and 100 variables.  There are a few hundred partial duplicates which need to be investigated to determine whether they are duplicate observations with slightly different data or unique observations.

I can identify the partial duplicates but not which variables have different values for the very similar observations.

dups b1 b5 b6 c1 d2_dt d3 d4 t2 d5_dt d6 d7 d13 d14, key(id lcm_id tcode xcode ppob) verbose

Can anyone suggest an efficient method of highlighting the difference(s) between the potentially duplicated observations.

Thanks you

David

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