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st: Inequality programs -ineqdeco-, -ineqdec0- updated on SSC


From   "Stephen P. Jenkins" <stephenj@essex.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   st: Inequality programs -ineqdeco-, -ineqdec0- updated on SSC
Date   Sun, 3 Sep 2006 13:37:03 +0100 (BST)

I have updated my programs -ineqdeco- and -ineqdec0- on SSC. To get the updates,
use -ssc install- or -adoupdate-. Program descriptions follow below.

The main change is that the programs are now version 8.2 rather than version 5
(sic), and the programs are rclass. There is now a large number of saved results in
r(..). Functionality is much the same as before.  The old versions of the programs
have been retained (with different names; see below) for the convenience of users
who only have access to Stata versions 5 to 8.1.

Thanks to especially Nick Cox and Philippe Van Kerm for comments and suggestions,
and to Cem Baslevent for drawing attention to some typos in the old help file.

Stephen Jenkins

-------------------------------------------------------------------------------------------------------------
package ineqdeco from http://fmwww.bc.edu/repec/bocode/i
-------------------------------------------------------------------------------------------------------------


TITLE
      'INEQDECO': module to calculate inequality indices with decomposition by
subgroup

DESCRIPTION/AUTHOR(S)

      ineqdeco estimates a range of inequality and related
      indices      commonly  used by economists, plus optional
      decompositions of a subset of      these indices by  population
      subgroup.  Indices estimated are:   members of the single
      parameter Generalized Entropy class GE(a)   for a = -1, 0, 1,
      2; the Atkinson class A(e) for e = 0.5, 1, 2;       the Gini
      coefficient, and the percentile ratios p90/p10 and p75/p25.
      Optionally presented are indices  related to the Atkinson
      inequality indices, viz equally-distributed-equivalent income
       Yede(e), social welfare indices W(e), and the Sen welfare index.
           If there are observations with negative or zero values on
      the variable     of interest, and you wish to wish to estimate
      inequality indices    including these observations, then use
      ineqdec0 (q.v.)      This version is for Stata versions 8.2
      onwards. For versions 5 to 8.1,      use ineqdeco5 instead.

      Author: Stephen P. Jenkins, University of Essex
      Support: email stephenj@essex.ac.uk

      Distribution-Date: 20060901

INSTALLATION FILES                             (type net install ineqdeco)
      ineqdeco.ado
      ineqdeco.hlp
      ineqdeco5.ado
      ineqdeco5.hlp
-----------------------------------------------------------------------------------------------------------
(type -ssc install ineqdeco- to install)

. ssc describe ineqdec0

-----------------------------------------------------------------------------------------------------------
package ineqdec0 from http://fmwww.bc.edu/repec/bocode/i
-----------------------------------------------------------------------------------------------------------

TITLE
      'INEQDEC0': module to calculate inequality indices with decomposition by
subgroup

DESCRIPTION/AUTHOR(S)

           ineqdec0 is a stripped-down version of ineqdeco (q.v.).
      Unlike      the latter, it will provide estimates using samples
      containing   zero or negative values for the variable of
      interest. But as a result the      portfolio of indices estimated
      is reduced to the p90:p10 ratio, GE(2) = half the squared
      coefficient of  variation, and the Gini      coefficient, and
      Sen's welfare index. (The other indices      estimated by
      ineqdeco are not defined for zero and negative      values of the
      variable of interest.)       This version is for Stata versions
      8.2 onwards. For versions 5 to 8.1,    use ineqdeco5 instead.

      Author: Stephen P. Jenkins, University of Essex
      Support: email stephenj@essex.ac.uk

      Distribution-Date: 20060901

INSTALLATION FILES                             (type net install ineqdec0)
      ineqdec0.ado
      ineqdec0.hlp
      ineqdec05.ado
      ineqdec05.hlp
-----------------------------------------------------------------------------------------------------------
(type -ssc install ineqdec0- to install)


-- 
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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