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BYGAP: Stata module to insert by-gap observation at the start of each by-group

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Author Info

  • Roger Newson

    () (National Heart and Lung Institute, Imperial College London)

Abstract

bygap inserts a by-gap observation at the start of each by-group defined by a list of by-variables, or at the start of the data set if no by-variables are specified. The by-gap observation for each by-group has the same by-variable values as the by-group, and all other variables are set to missing values. (The user can replace these missing values with other values afterwards.) Optionally, bygap generates an indicator variable, indicating which observations are by-gap observations.

Download Info

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File URL: http://fmwww.bc.edu/repec/bocode/b/bygap.ado
File Function: program code
Download Restriction: no
File URL: http://fmwww.bc.edu/repec/bocode/b/bygap.hlp
File Function: help file
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Bibliographic Info

Software component provided by Boston College Department of Economics in its series Statistical Software Components with number S432101.

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Programming language: Stata
Requires: Stata version 7.0
Date of creation: 05 May 2003
Date of revision: 21 May 2003
Handle: RePEc:boc:bocode:s432101

Note: This module may be installed from within Stata by typing "ssc install bygap". Windows users should not attempt to download these files with a web browser.
Contact details of provider:
Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA
Phone: 617-552-3670
Fax: +1-617-552-2308
Email:
Web page: http://fmwww.bc.edu/EC/
More information through EDIRC

Order Information:
Web: http://repec.org/docs/ssc.php

Related research

Keywords: data manipulation;

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