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Re: st: R: linear regression question

From   Maarten buis <>
Subject   Re: st: R: linear regression question
Date   Sun, 15 Mar 2009 15:48:52 +0000 (GMT)

--- On Sun, 15/3/09, Carlo Lazzaro wrote:
> your thread seems to refer to a log-linear model, where
> only the dependent variable (i.e., Y) is log-transformed.
> In a log-linear model, a unit-change in the independent
> variable X (i.e., DeltaX=1)is associated with a 100*Beta% 
> change in Y.

This is one possible way of interpreting such a model. An 
alternative way is discussed in: Roger Newson (2003) "Stata
Tip 1: The eform() option with regress" The Stata Journal,
3(4): 445.

Both interpretations are correct, they are just different
ways of looking at the same model.

Hope this helps,

Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen


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