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st: Lorenz curve


From   Shehzad Ali <sia500@york.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   st: Lorenz curve
Date   19 Oct 2008 21:30:24 +0100

Hi listers,

I have drawn a lorenz curve for healthcare spending (varname 'spent'). The curve shows a sudden jump upwards at about 0.5 units along the x-axis. Here is my command line:

glcurve spent [aw=weight], glvar(pay) pvar(rank) sortvar(income) replace lorenz

In order to understand this sudden jump, I have tried the following:

twoway dropline spent rank, mlabel(spent)

But I am not able to understand/explain the sudden shift as there are no high 'spent' values around where rank==0.5. Would any be able to help me understand this please?

Any help would be appreciated.

Thank you,

Shehzad
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