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From | Stata Stata <statalearner@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: Need help with glcurve |
Date | Sat, 26 Feb 2011 20:56:17 +0000 |
Hi, I am working with grouped data on longitudinal form. I want to draw a concentration curve using glcurve (or so I think). What I've got so far is: glcurve health, glvar(yord) pvar(rank) sortvar(income) replace by(year) split lorenz nograph where health is a binomial variable (with 0 for absent morbidity and 1 for morbidity) and income is a number from 1-14 for different income groups. Year is also a binomial variable (with 0 for the year 2007 and 1 for the year 2009) Then I use twoway to draw the curve, but the graph doesn't look right to me. The lines for the two years I'm working with look like steps, with the line of equality in the middle. Am I doing something wrong? Should I be using a frequency weight and if so, how do I create it? Best regards, Maria Erla * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/