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st: Identifier from three variables


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Identifier from three variables
Date   Fri, 27 Jul 2007 18:00:08 +0100

Nick
n.j.cox@durham.ac.uk 

-----Original Message-----
From: Nádia N. Simőes [mailto:nadia.simoes@iscte.pt]

 How can I generate an identifier from three variables? 
In my data I have a column for the house, one for the family and one for the individual

example:

house     family   individual
1                 1         1
1                 1         2
1                 1         3
2                 1         1
2                 1         2
...

and I would like to know how can I create an identifier per individual such as:

individual
010101
010102
010103
020101
...

kind regards

nádia

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