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help for ^ineqdec05^
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Inequality indices, with decomposition by subgroup
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^ineqdec05^ varname [^[^fweights aweights^]^ ^if^ exp ^in^ range], 
		[^by^group^(^groupvar^)^ ^w^ ^s^umm]

^ineqdec05^ is a stripped-down version of ^ineqdeco5^. Unlike the latter,
it will provide estimates using samples containing zero or negative
values for varname.  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 ^ineqdeco5^ are not defined for zero and negative 
values of varname.)

^ineqdec05^ is for use with Stata versions 5 to 8.1. For versions 8.2 onwards,
use ^ineqdec0^.

Options
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^by^group^(^groupvar^)^ requests inequality decompositions by population
	subgroup, with subgroup membership summarized by groupvar.
^w^ requests calculation of Sen's welfare index in addition to the 
	inequality index calculations.
^s^umm requests presentation of ^summary, detail^ output for varname.

Saved results
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S_9010, S_7525		Percentile ratios p90/p10, p75/p25
S_i2				GE(2)
	
Examples
--------
. ^ineqdec05 x [w=wgtvar]^
. ^ineqdec05 x, by(famtype) w^
. ^ineqdec05 x if sex==1, w s^

Author
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Stephen P. Jenkins <stephenj@@essex.ac.uk>
Institute for Social and Economic Research
University of Essex, Colchester CO4 3SQ, U.K.


NB minor fixes in February 2001: 
   (i) Made compatible with Stata 7
       (NB still runs with Stata 5 and Stata 6.)
   (ii) bug fix for Gini with fweights (minor).


Also see
--------
^ineqdeco^ if installed.

^inequal^ (sg30: STB-23) if installed; ^rspread^ (sg31: STB23) if installed
^povdeco^ if installed; ^sumdist^ if installed
^inequal2^ (http://fmwww.bc.edu/RePEc/bocode/i)  if installed; 
^ineqerr^ [STB-51: sg115] if installed