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st: ivreg2 updated

From   Christopher Baum <>
To   "" <>
Subject   st: ivreg2 updated
Date   Sun, 28 Jul 2013 21:28:04 +0000

The ivreg2 package of Baum, Schaffer, Stillman (Stata Journal, 2003, 2007) has been updated on the SSC archive to deal with a very obscure bug arising from partialling out (only) the constant term, which caused e(sample) to be improperly set. You may update the routine via

adoupdate ivreg2, update

The ancillary certification script,, runs a battery of tests to test the program's workings and demonstrate that all bugs found to date have been properly squashed.

Kit Baum & Mark Schaffer

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