Dear statalist members;
I did not get any replies to my query, so I let me ask
it a different way:
The program -cortesti- compares the correlation
coefficients by constructing a Z-score of the
difference as follows:
Z1=ln((1+corr1)/(1-corr1))/2
Z2=ln((1+corr2)/(1-corr2))/2
Z =(Z1-Z2)/sqrt((1/(n1-3))+(1/(n2-3)))
where corr1 and corr2 are the 2 correlation
coefficients and n1 and n2 the corresponding sample
sizes. Z is the test statistic use to compute a
p-value. Does anyone know of a different approach?
Thank you in advance
Ricardo.
Thank you
--- Ricardo Ovaldia <[email protected]> wrote:
> Dear all,
>
> I have been using -cortesti- to compare correlation
> coefficients from two independent samples. I am
> concerned that the test may be too conservative for
> moderate sample sizes (n=85). Is there a different
> way
> to test whether correlation coefficients from two
> independent samples are equal?
>
> Thank you,
> Ricardo.
>
> =====
> Ricardo Ovaldia, MS
_______________________________
Do you Yahoo!?
Shop for Back-to-School deals on Yahoo! Shopping.
http://shopping.yahoo.com/backtoschool
*
* 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/
