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

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 )
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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