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re: st: Post codes to locality

From   Christopher Baum <>
To   "" <>
Subject   re: st: Post codes to locality
Date   Mon, 23 Apr 2012 08:30:56 -0400

Ronnie said

-merge- ? 

if postcode is common to both files then you should be able to -merge- and then keep if _merge == 3 no? 

Yes, that is precisely the point of the Stata FAQ I referenced. The easiest way to juxtapose aggregate characteristics (e.g. locality) with individual characteristics (e.g., postcode) is via a merge. The fact that the concordance between the two will have many non-matching observations matters not. As Ronnie said, you just throw them away by focusing on _merge==3, that is, those localities with at least one postcode represented in your sample.


Kit Baum   |   Boston College Economics & DIW Berlin   |
                             An Introduction to Stata Programming  |
  An Introduction to Modern Econometrics Using Stata  |

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