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st: Checkvar updated on SSC

From   Phil Bardsley <>
Subject   st: Checkvar updated on SSC
Date   Thu, 12 Mar 2009 07:45:37 -0400

Thanks to Kit Baum, -checkvar- has been updated on the SSC archive. I've added "if" and "in" options.

The -checkvar- command is intended to assist in checking a created variable. It lists each value of the created variable and all combinations of the component variables that were used to create it.

For those working with survey data, -checkvar- can display the pattern of responses through a complex set of skip and filter questions. This is useful when testing a new CAPI questionnaire as well as for cleaning and analyzing survey data.

The -checkvar- command is modeled on the "list" option in SAS proc freq. See also -groups- by Nick Cox on the SSC archive.

Phil Bardsley <>
Research Programming Services
Carolina Population Center
University of North Carolina
Chapel Hill, NC 27516 USA
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