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st: RE: dominance testing

From   "JP Azevedo" <>
To   <>
Subject   st: RE: dominance testing
Date   Mon, 9 Jun 2008 10:48:49 -0300

Hello Shehzad,

Please notice that that the user writtem command alorenz also test the
stocastist dominance (first order, second order and Lorenz dominance).

ssc alorenz, install

    compare Analysis the first order stochastic dominance (Saposnik, 1981,
1983), second order
    stochastic dominance (Shorrocks, 1983), and the Lorenz dominance of the
distribution (Atkinson,

Best, JP

-----Original Message-----
[] On Behalf Of Shehzad Ali
Sent: Monday, June 09, 2008 2:03 AM
Subject: st: dominance testing


I am trying to test dominance of concentration curves using - dominance -
command. Say there are 1,000 individuals in the sample and 300 of them have
insurance and 700 don't. Concentration curves of their health care
expenditures are plotted using - glcurve - command. Is it legitimate to test
dominance of the two curves against each other or do we only test for
dominance between two types of variables for the same individual?

When I run the dominance command I get an error saying 'no observations'. 
Here is what I am doing:

dominance y1 y2 [aw=wt], sortvar(x) rule(both)

y1= health expenditure of insured
y2=health expenditure of uninsured
x=income variable

Any help would be appreciated.


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