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st: Log transform- SE or std

From   Ricardo Ovaldia <>
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?


Ricardo Ovaldia, MS
Oklahoma City, OK

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