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Re: st: RE: Heterogeneity Index


From   Ángel Rodríguez Laso <angelrlaso@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Heterogeneity Index
Date   Fri, 11 Dec 2009 09:27:15 +0100

Wouldn't be the Levene's test of homogeneity of variances suitable?

Best regards,

Angel Rodriguez-Laso

2009/12/7 Nick Cox <n.j.cox@durham.ac.uk>:
> 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.
>
> Nick
> n.j.cox@durham.ac.uk
>
> 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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