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st: ivreg2, xtivreg2 updated on SSC


From   Christopher Baum <kit.baum@bc.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: ivreg2, xtivreg2 updated on SSC
Date   Mon, 28 Jun 2010 21:45:17 -0400

<>
The -ivreg2- routine of Baum, Schaffer and Stillman and the accompanying -xtivreg2- routine of Schaffer have been updated to provide more informative error messages if the time variable used in -tsset- or -xtset- is partialled out of a regression or included in a fixed-effects model. The commands properly generated errors in those cases, but did not explain what should be done. You may access the updated versions via -ssc- or, if already installed, by -adoupdate-.

Several recent postings indicating errors with -xtivreg2- suggest that users should preferably use -adoupdate- to ensure that all three components-- -xtivreg2-, -ivreg2- and -ranktest- -- are fully updated. Getting these out of sync can cause problems.

Kit

Kit Baum   |   Boston College Economics & DIW Berlin   |   http://ideas.repec.org/e/pba1.html
                              An Introduction to Stata Programming  |   http://www.stata-press.com/books/isp.html
   An Introduction to Modern Econometrics Using Stata  |   http://www.stata-press.com/books/imeus.html


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