Thanks for the reply, pls I still I need more
information on how to combine the zscores.
gen z = 0.5*ln((1+r)/(1-r))
gen se = sqrt (1/(n-3))
gen selog = log (se)
Can I just combine the transformed correlations (z)
directly or I will have to take the log of it.
meta z selog, eform graph(r)
or
gen logz = log(z)
meta logz selog, eform graph(r)
Thanks.
Olalekan Uthman
--- Ron�n Conroy <[email protected]> wrote:
> On 31 M�rta 2007, at 16:44, Uthman Olalekan wrote:
>
> > Dear Stata Users,
> >
> > After searching on statalist and findit, I am yet
> to
> > find a clue on how to carry out meta-analysis of
> > correlation coefficient and or sample size.
>
> Sample size can be calculated with -sampsi_rho-. You
> can locate this
> using
>
> . findit sample size correlation
>
> As for meta analysis, you will have to transform the
> correlations to
> z-scores using Fisher's transformation. This will
> allow you to
> combine them.
>
> >
> > Please, can some provide me with more information
> on
> > how to do th� s.
>
>
>
> =========
> Ron�n Conroy
> Royal College of Surgeons in Ireland
> [email protected]
> +353 (0) 1 402 2431
> +353 (0) 87 799 97 95
> http://www.flickr.com/photos/ronanconroy
>
>
>
>
> *
> * 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/
>
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