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st: DEA error massage


From   "Anat (Manes) Tchetchik" <[email protected]>
To   [email protected]
Subject   st: DEA error massage
Date   Sat, 16 Nov 2013 16:11:04 +0200

Dear all,

I'm trying to run DEA with a panel of 150 hospitals.
As an illustration, to get an idea of how it works,  I tried the
example provided by Scott Merryman in this forum:

sysuse auto,clear
keep in 1/5
rename make dmu
dea length weight = mpg, saving(deaout)
use deaout,clear
tobit theta price, ul(1)

But immediately after the command: dea length weight = mpg, saving(deaout)  :
I receive:
too few variables specified
Any idea what might be the reason?
I have installed all the files under findit dea

Thanks in advance,
Anat Tchetchik, PhD
Department of Business Administration
Guilford Glazer Faculty of Business and Management
Ben-Gurion University of the Negev
P.O.Box: 653
Beer-Sheva, Israel, 84105

E-mail:       [email protected]
Phone         972-(0)8-6479735
Fax:           972-(0)8-6472920
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