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st: RE: Count presence of item on different vars


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Count presence of item on different vars
Date   Mon, 9 Oct 2006 16:14:16 +0100

Check out -tabm- from -tab_chi- on SSC. 

Alternatively, an approach from first
principles is to -reshape long- so 
that this reduces to a two-way tabulation. 

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

Nikolaos A. Patsopoulos
 
> I've got a set of variables v6-v146, each one containing 
> string values 
> (unique values ~4500):
> 
> v6    v7   v8   v9   v10...
> text1   text1   text3   text45 text1...
> text5   text2   text1   text455   text1
> .....
> 
> I want to count how many times each of the values appears in at least 
> one of the v6-v146 in each row [observation], e.g. text1 appears at 
> least once in 7365obs.
> 
> How can achieve this?

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