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

st: Log transform- SE or std


From   Ricardo Ovaldia <ovaldia@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Log transform- SE or std
Date   Mon, 23 Jun 2003 11:07:48 -0700 (PDT)

Dear all,

I used a log transform to normalize the distribution
of a biochemical substance. I then use a ttest to
compare the transformed mean of cases to controls. I
now want to present my results listing the means, stds
and the p-value. I could present the original
(untransformed) means and stds, but I think that is
misleading. Now, I know that the transformed mean is
the geometric mean, so no problem there, but what
about the standard error. How can I "untransform" it?

Thanks,
Ricardo.

=====
Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK

__________________________________
Do you Yahoo!?
SBC Yahoo! DSL - Now only $29.95 per month!
http://sbc.yahoo.com
*
*   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 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index