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precombine: A command to examine n>=2 datasets before combining

Chatfield, Mark D. (2015). precombine: A command to examine n>=2 datasets before combining<br />. The Stata Journal,15(3):607-626.

Document type: Journal Article
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IRMA ID 11381xPUB34
Title precombine: A command to examine n>=2 datasets before combining
Author Chatfield, Mark D.
Journal Name The Stata Journal
Publication Date 2015
Volume Number 15
Issue Number 3
ISSN 1536-867X   (check CDU catalogue open catalogue search in new window)
Start Page 607
End Page 626
Total Pages 20
Place of Publication United States
Publisher Stata Press
HERDC Category C1 - Journal Article (DIISR)
Abstract In this article, I present a new command, precombine, that alerts the user to, and provides assurance concerning, some problems that can occur when multiple Stata datasets are merged and appended. It describes variables that are common to multiple datasets as well as variables that are unique to one dataset. Where value labels are attached to variables, it checks whether code sets are identical across datasets. Summary statistics for values of all variables can also be listed and left in memory along with the descriptions of each variable of each dataset.
Keywords precombine
data management
merge
append
join by
cross
describe
uselabel
key
overlapping variables ...
Description for Link Link to published version
URL http://www.stata-journal.com/article.html?article=dm0081
 
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Created: Tue, 26 Jul 2016, 12:34:02 CST