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st: RE: A modest proposal - missing data doesn't count


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: A modest proposal - missing data doesn't count
Date   Mon, 14 Jun 2010 18:56:08 +0200

<>

Others have had similar thoughts:
http://www.stata.com/meeting/uk08/KIMacD.presentation.ppt



HTH
Martin

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Allan Reese
(Cefas)
Sent: Montag, 14. Juni 2010 18:52
To: statalist@hsphsun2.harvard.edu
Subject: st: A modest proposal - missing data doesn't count

Feeling aggrieved at years of typing expressions like "if x>10 & x<.",
and feeling sure there must be lots of wrong results from Stata because
users didn't notice that "x>10" includes cases with the missing value,
might I request a new code function?  

The name value() is available. While users would have to remember to use
it, it would quickly become a habit to type "if value(x)>10" etc, with
the effect that the expression would evaluate as true only when x had a
non-missing value.  A check box could be added to the menu interface as
a reminder.    

Allan

PS Not one response to my question on use of glm v blogit v glogit
(Statalist 26 May).  Does *anyone* have a view?


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