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st: RE: Heterogeneity Index

From   "Nick Cox" <>
To   <>
Subject   st: RE: Heterogeneity Index
Date   Mon, 7 Dec 2009 19:10:19 -0000

I can't see a way to answer this precisely without an idea of what index you have in mind. -egen- supports many alternatives to the standard deviation. Otherwise it may be that you seek some so-called nonparametric test. 


Diego Bellavia

I would like to measure the amount of variability I have for one specific measure in 2 different groups 
of patients. of course I could use the standard deviation for that but I would like also to 
create an index of that variability and be able to compare that index between the 2 groups with a formal stat test.
Note that in this case I am not interested in central tendency measures (mean or median) but just in a way to quantitate 
the variability, present that as an index and compare among 2 (or more) groups. 

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