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Re: st: how to create case id number

From   "Eric G. Wruck" <>
Subject   Re: st: how to create case id number
Date   Fri, 29 Apr 2005 10:56:12 -0400

Stata does very little automatically.  One thing that it does do automatically is create a variable _n that contains the observation number or record number.  However, as soon as you sort or do something with the data set, these _ns will change.  So, to create the variable you seem to want, you'll want to use the generate command (usually abbreviated gen):

gen case_id = _n

I encourage you to play with Stata, including the very good help facilities.  You'll learn a lot quickly by simply diving in!  Good luck.


>Is there a STATA command that automatically generates a case id for each
>record in a dataset?
>Thank you for your help in advance.
>Seok-Woo Kwon



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