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Suggested answer to exercise: Transformations, 2

Question 2: How can we interpret the antilog of the difference
and its confidence interval?

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Suggested answer

The antilog of the difference between the means on the log scale is
the ratio of the means on the natural scale.
The antilog of a mean is the geometric mean, so the antilog of the difference
is the ratio of two geometric means.
So the point estimate for the ratio of the geometric mean albumin for
COAD patients is twice that for controls, with interval estimate 1.4 to 3.0.

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Exercise: Transformations.

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Last updated: 27 July, 2009.