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Re: st: how to use inverse hyperbolic sine function


From   smerryman@kc.rr.com
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to use inverse hyperbolic sine function
Date   Wed, 30 Mar 2005 15:37:55 -0600

An inverse hyperbolic sine transformation is:
 IHS = log(z + sqrt(z^z + 1))

It is an alternative to log transformations when some of
the variables take on zero or negative values and as
an alternative to the Box-Cox when variables are zero or 
negative.


See, for example:

Layton, David F, 2001. "Alternative Approaches for Modeling 
Concave Willingness to Pay Functions in Conjoint Valuation," 
American Journalof Agricultural Economics, vol. 83(5), 1314-20. 

Burbidge, John B., Lonnie Magee and A. Leslie Robb. 1988 "Alternative 
Transformations to Handle Extreme Values of the Dependent Variable."
 Journal of the American Statistical Association, vol. 83, 123-127.



Scott


----- Original Message -----
From: wying1@umbc.edu
Date: Wednesday, March 30, 2005 1:40 pm
Subject: st: how to use inverse hyperbolic sine function

> Dear users,
> 
> I need to use inverse hyperbolic sine function to transform my 
> dependentvariables in a regression, which, honestly, I don't 
> understand very much. 
> I failed to find the relevant commands to perform this technique 
> in Stata
> 7.0.  Does anybody have a relevant program which I can use as a 
> reference,and have suggestions about interpreting the coefficient 
> for varaibles like
> gender?  Thanks a lot.
> 
> 
> 
> Ying


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