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help for ^ineqdec0^                          (STB-48: sg104)
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Inequality indices, with decomposition by subgroup
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^ineqdec0^ varname [weight] [^if^ exp] [^in^ range]
		[^,^ ^by^group^(^groupvar^)^ ^w^ ^s^umm]

^fweight^s and ^aweight^s are allowed; see help @weights@.

^ineqdec0^ is a stripped-down version of ^ineqdeco^. 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 ^ineqdeco^ are not defined for zero and negative 
values of varname.)



Options
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^bygroup(^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.
^summ^ 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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   . ^ineqdec0 x [w=wgtvar]^
   . ^ineqdec0 x, by(famtype) w^
   . ^ineqdec0 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.
      stephenj@@essex.ac.uk


Also see
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    STB: STB-48 sg104