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st: interpreting marginal effects after ivpois


From   "Anat (Manes) Tchetchik" <anatmanes@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: interpreting marginal effects after ivpois
Date   Thu, 14 Feb 2013 19:53:42 +0200

Dear all,
I ran mfx after ivpois and not sure how to interpret the results
I received (for example):
     y  = Linear prediction (predict)
         =  1.1915456
------------------------------------------------------------------------------
variable |      dy/dx    Std. Err.     z    P>|z|  [    95% C.I.   ]      X
---------+--------------------------------------------------------------------
   age |  -1.3343   .49789   -2.68   0.007  -2.31022 -.358511   3.47479

Does it mean that an increase of 1 year decreases the number of events
in 1.3343?
what does the the  =  1.1915456 stand for?
Thanks,
Anat

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

E-mail:       anat@som.bgu.ac.il
Phone         972-(0)8-6479735
Fax:           972-(0)8-6472920
Web:          http://cmsprod.bgu.ac.il/Eng/som/hotelmanage/Staff/Academic/ChechikA.htm
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