Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Comparison of multivariate outcome between two groups


From   n p <[email protected]>
To   [email protected]
Subject   st: Comparison of multivariate outcome between two groups
Date   Wed, 24 Mar 2004 09:03:02 -0800 (PST)

Dear Statalisters,

I need your advice on the following problem:
I want to compare the size off some specific teeth
between two groups (boys and girls). My dataset
consists of 6 (upper) and 6 (lower) teeth measurements
per individual in wide format for 100 boys and 100
girls. Let us suppose that all these measurements are
normally distributed given each individuals gender. Is
there a multiple comparison problem if one fits 12
regressions one for each teeth (eg xi:reg
tooth_size`i' i.gender, i=1 ... 12) or there is no
such a problem because all these test are not
independent. Is there any gain in using "mvreg" or
"sureg" commands ( I think that "mvreg" and "sureg",
given a common set of covariates,  produce the same
results as separate regressions). Finally do you
believe that a hierarchical modeling approach (teeths
nested within individuals), using xtreg perhaps, is a
preferable solution. I am familiar with hierarchical
models but my prior experience is mainly on repeated
measurements of the same variable over time.

Any thoughts would be greatly appreciated.

Nikos Pantazis
Biostatistician 

__________________________________
Do you Yahoo!?
Yahoo! Finance Tax Center - File online. File on time.
http://taxes.yahoo.com/filing.html
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index