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st: RE: Create common ID # from several changing ID #s

From   Nick Cox <>
To   "''" <>
Subject   st: RE: Create common ID # from several changing ID #s
Date   Fri, 3 Dec 2010 18:30:52 +0000

On this information I can't see a method other than something of the form 

gen newid = # if inlist(current_id, <list>) | inlist(other_id1, <list>) | inlist(other_id2, <list>) 


Andrea Drechsler

I have a dataset of medical providers at the provider-year level.
Each provider has an ID #.  If the provider moves to a new location,
they are assigned a new ID #.  I have two other variables that
sometimes contain providers' previous or future ID #s.  I'm trying to
create a common ID # for each provider so I can track them over time.

For example, I'd like to assign all of the following observations a common ID #:

current_id		other_id1		other_id2
406434166		406434127
406434127		406434166		406414087
406414087		406384157

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