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st: new ineqdeco - capturing results for dynamic decomposition


From   "Stephen P. Jenkins" <stephenj@essex.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   st: new ineqdeco - capturing results for dynamic decomposition
Date   Sun, 10 Sep 2006 12:44:06 +0100 (BST)

If you look at the decomposition-of-inequality-change expressions provided on page
896 of Mookherjee and Shorrocks (1982), you'll see no use of "subgroup sum of
weights" (that was provided in -ineqdeco- as a saved result for completeness's
sake).  Perhaps you're thinking of the subgroup population share terms (v_k)?  
Whatever, I think you should be able to calculate all the elements of their
equation from what is returned after -ineqdeco- (or -ineqdec0-)

Stephen

References:

Mookherjee, D. and Shorrocks, A. 1982.  A decomposition analysis of the trend in UK
inequality.  Economic Journal 92: 886-992.

See also

Jenkins, S.P. 1995.  Accounting for inequality trends: decomposition analyses for
the UK, 1971-86.  Economica 62: 29-63.

------------------------------

Date: Sat, 9 Sep 2006 03:57:03 -0700 (PDT)
From: Brian Sartene <brian_sartene@yahoo.com>
Subject: Re: st: new ineqdeco - capturing results for dynamic decomposition

Thanks very much for this very helpful advice, I can
now capture the results perfectly.
However, I'm still not getting the right end results
and I think it may be because I'm not weighting the
subgroups properly. Returning to my question below,
could I ask whether the "subgroup sum of weights" is
meant to be incorporated into the decomposition?
Again, many thanks.
Brian




-- 
Professor Stephen P. Jenkins <stephenj@essex.ac.uk>
Institute for Social and Economic Research
University of Essex, Colchester CO4 3SQ, U.K.
Tel: +44 1206 873374.  Fax: +44 1206 873151.
http://www.iser.essex.ac.uk
Survival Analysis using Stata:
http://www.iser.essex.ac.uk/teaching/degree/stephenj/ec968/

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