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RE: st: How to plot cdf after corrected kernel density


From   "Jain, Monica (HarvestPlus)" <M.Jain@cgiar.org>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: How to plot cdf after corrected kernel density
Date   Fri, 4 Oct 2013 14:45:46 +0000

Thank you all so much for your very useful input. I am sorry, I should have been more concrete with my example. I have small sample data on the number of days a child 
is sick for two time periods 1996 and 2006 for Bangladesh. I wanted to show the improvement in sickness over time visually. Therefore, I wanted to use smoothing 
techniques like kernel density, for nicer looking plots, and not for numerical estimation. For numerical testing of improvement over time I am using Somers D statistic. 

As there are a lot of zeros in the data, I wanted to use  -kdens- command which can correct for lower bound. I am using linear combination technique for boundary 
correction.  As the -kdens- program does not generate smoothed cdf like -akdensity- does, I have to do it separately. With the use of -integ- command I have been 
able to get the smoothed CDF. For visualization purposes, this crude integration methods seems to be working with my data. Please correct me if I should be doing something different. 

Regards,
Monica


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