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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
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. ^ineqdec05 x [w=wgtvar]^
. ^ineqdec05 x, by(famtype) w^
. ^ineqdec05 x if sex==1, w s^
Author
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Stephen P. Jenkins
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
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^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