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RE: st: deming regression


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: deming regression
Date   Fri, 29 Feb 2008 10:42:08 -0000

The quantity 

(cv2 * mean2) / (cv1 * mean1) 

is 

((sd2 / mean2) * mean2) / ((sd1 / mean1) * mean1) 

and so is a ratio of standard deviations, not of variances. Only
exceptionally
will the two be the same. Similarly, I don't see that a variance ratio
can be 
calculated as a ratio of standard errors. 

Nick
n.j.cox@durham.ac.uk 

Yulia Marchenko

Subramanian Swaminathan <ssubra@yahoo.com> asks about the input
parameters to
the user-written command -deming-:

> I have a problem in giving inputs to the 'deming' command in stata.



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