_GPROD: Stata module to extend egen for product of observations
Philip Ryan ()
Additional contact information
Philip Ryan: University of Adelaide
Statistical Software Components from Boston College Department of Economics
prod provides a multiplicative function for egen analogous to the additive sum function. The product of all non-missing observations of meeting optional in and if conditions is returned in for each observation meeting the conditions. would most commonly be an existing variable in the data set. This is version 1.3.4 of the software.
Requires: Stata version 6.0
Date: 1999-06-28, Revised 1999-08-04
Note: This module may be installed from within Stata by typing "ssc inst _gprod". Windows users should not attempt to download these files with a web browser.
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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/_/_gprod.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/_/_gprod.hlp program code (text/plain)
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Persistent link: https://EconPapers.repec.org/RePEc:boc:bocode:s382501
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