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st: RE: duplicate values of variables


From   "White, Justin" <JWhite@yesvirginia.org>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: duplicate values of variables
Date   Tue, 24 Oct 2006 15:49:37 -0400

Search the help files for 'duplicates'.

This should give you the info you need.


Justin White

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Carter Rees
Sent: Tuesday, October 24, 2006 3:47 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: duplicate values of variables

Statalist,

I have a data set in which the unit of analysis is the survey
respondent.
Each respondent was asked to nominate up to ten friends and enter a
unique
id for those friends in the variables friend1-friend10.  What I would
like
to do is run a search through friend1-10 for each respondent to identify
if
the respondent nominated any of the friends more than once by mistake.
If
they did I would like to be able to create a variable(s) which let me
know
the id of the duplicated friend.  

Aid   f1    f2    f3    f4    f5    f6    f7    f8   f9    f10
22	12	23	23	44	.	.	.	.
.
.	
33	33	67	90	.	78	99	.	.
.
.
44	56	89	90	88	.	.	.	.
.
.	
55	34	35	35	.	34	67	89	90
77
66

Cheers,


Carter


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