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RE: st: different results of estat vif in different versions


From   Richard Williams <[email protected]>
To   [email protected]
Subject   RE: st: different results of estat vif in different versions
Date   Wed, 02 Mar 2011 22:02:36 -0500

At 08:14 PM 3/2/2011, Yang Jue wrote:
Thank you very much for your mail.
Here is my command. I used the cluster option.


regress unfccc logpopsize logimfgdppc growthrateinterpolate freedom engonumber iengobranch proportion ruralpopulation forestarea eumember Industryinterpolate igonumber wtreatynorwmlag wlanlag wrellag wgnipclag wdistance year1994 year1995 year1996 year1997 year1998 year1999 year2000 year2004 if _st==1, cluster(id)
estat vif

My coauthor and I use the same dataset and same do.file in our different PC.Then it comes out that only the vif value are different.

Best Regards,Jue YangCenter for Global Enviornmental ResearchNational Institute for Environmental Studies, Japan

Thanks. Sorry, but try as I might I can't replicate. Make sure that you both have the most current versions of your respective Stata programs. The -help whatsnew- command shows that, in the June 3 2010 update of Stata 11, " estat vif produced incorrect results when used with a subset of the data. This has been fixed." So, my first guess would be that you have an older version of Stata 11 that does not include that fix. Indeed, the first thing I do with any problem is make sure I have the latest and greatest versions of everything to see if the problem has already been taken care of. When I type -update query- on my machine, I get

. update query
(contacting http://www.stata.com)

Stata executable
    folder:               C:\Program Files (x86)\Stata11\
    name of file:         StataSE-64.exe
    currently installed:  04 Nov 2010
    latest available:     04 Nov 2010

Ado-file updates
    folder:               C:\Program Files (x86)\Stata11\ado\updates\
    names of files:       (various)
    currently installed:  24 Feb 2011
    latest available:     24 Feb 2011

Utilities updates
    folder:               C:\Program Files (x86)\Stata11\utilities
    names of files:       (various)
    currently installed:  01 Sep 2010
    latest available:     01 Sep 2010

Recommendation
    Do nothing; all files up to date.



-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
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