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Starting new messages [was: Re: st: What is i. ?]


From   Michael Hanson <mshanson@mac.com>
To   statalist@hsphsun2.harvard.edu
Subject   Starting new messages [was: Re: st: What is i. ?]
Date   Sun, 13 Jul 2008 09:18:30 -0400

Grr....

Sorry for the wasted bandwidth on this question: I am catching up on a backlog of Statalist messages, and did not notice that this question was already answered -- embedded in a completely unrelated message thread with the subject "How do I test that two subsample have different coefficient of variation?".

Please, for the sake of those of us who have mail readers that properly respect the X-header attribute and thread our messages accordingly (which seems to exclude certain Microsoft projects), follow the advice in the Statalist FAQ:

Start new threads with fresh postings, not replies
<http://www.stata.com/support/faqs/res/statalist.html#others>

As the FAQ notes, this will also improve the organization of the list archive. Thank you.

-- Mike
On Jul 13, 2008, at 8:46 AM, Michael Hanson wrote:


On Jul 10, 2008, at 3:36 PM, Solorzano, Jenniffer wrote:

Hi!

Somebody knows what does it mean "i.variable name"? What does it mean i.
before the name of a variable?. I'm trying to run a instrumental
variable regression and I'm trying to understand a do-file somebody gave
me.


This is the do-file part:

xi: ivreg lagreg3pcpc (lypc = lmiem e0_4 e5_8 e9_12 e13_17 e18_24 e25_54
e55_99 ultimoaprjef edadjefe i.region) ultimoaprjef edadjefe if PPA05==1
Do you know what the -xi:- prefix command does? Your question suggests not, and -help xi- is the appropriate action here. In it you will find a complete description of the i. notation, which will be important for understanding and interpreting the regression you are trying to estimate.

-- Mike


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