Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

RE: Re: st: Configuring Data to percentage ratios


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   RE: Re: st: Configuring Data to percentage ratios
Date   Sun, 5 Dec 2004 15:20:44 -0000

Not my field at all, but the chapter on ratios 
in 

Rupert G. Miller. 
1986 (reissue 1997). 
Beyond ANOVA. 
New York: John Wiley (London: Chapman and Hall)

looks relevant. 


Nick 
[email protected] 

David Airey

> > Pharmacology journals, at least in the past, allowed you to divide 
> > individual
> > fluorescence values in each of the drug groups by the mean of the 
> > control group
> > values as the divisor, and then calculate SEs or SDs from the 
> > quotients.  This
> > treats the control group's mean as if it were fixed, known. 
>  It gives 
> > an SE
> > that is symmetric about the ratio of the means.
> 
> 
> This is still allowed. I would love to read a reference in 
> which it is 
> shown to hurt rather than help. Being in a pharmacology 
> department but 
> coming from other fields, the practice bothers me.
> 

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index