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RE: re:Re: st: Does it need to control industry if the concerned variable has been adjusted by industry?


From   "Lachenbruch, Peter" <Peter.Lachenbruch@oregonstate.edu>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: re:Re: st: Does it need to control industry if the concerned variable has been adjusted by industry?
Date   Tue, 16 Mar 2010 09:17:55 -0700

Not always.  I just had a doctoral student ask me for advice for a study done on a convenience sample with not control over response.  She had 35% missing on a key variable.  I doubt if the work will be reproducible.  

As is usual in these cases, she came to me a couple of weeks before her defense.

Tony

Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Kit Baum
Sent: Tuesday, March 16, 2010 5:15 AM
To: statalist@hsphsun2.harvard.edu
Subject: re:Re: st: Does it need to control industry if the concerned variable has been adjusted by industry?

<>
Maarten asserted 

> Second, in statistics you don't _need_ to do anything. There
> is no such things as statistical police.

As Maarten should know, there are such things -- they are known as dissertation advisors!  :)

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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