Re: st: AW: Meta-analysis pooling relative risk from relative risks possible?

["Roger B. Newson" <r.newson@imperial.ac.uk>]

Another possibility is -metaparm-, part of the SSC package =parmest-, 
which you can use together with the -parmhet- package to do 
meta-analyses with heterogeneity tests and variance-weighted geometric 
mean effects. These also have an -eform- option for when the input 
estimates and standard errors are for risk ratios, odds ratios or 
geometric mean ratios.

Best wishes

Roger


Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
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London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: r.newson@imperial.ac.uk
Web page: http://www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/

Opinions expressed are those of the author, not of the institution.

On 16/02/2012 10:36, Trelle Sven wrote:
> You will need to log-transform the RR and the corresponding confidence interval (e.g. gen newvar = ln(RR)). Then metan from ssc (ssc install metan) should do the job.
>
> If not, you will need to approximate the standard error from the log transformed confidence interval:
>
> se=(uci-lci)/3.92 (should be reasonable in most situations but you have to judge this by yourself)
>
> se = standard error of logRR
> uci = upper confidence interval (log transformed)
> lci = lower ...
>
> Do not forget to use the eform option.
>
> Best
> Sven
>
> > -----Ursprüngliche Nachricht-----
> > Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-
> > statalist@hsphsun2.harvard.edu] Im Auftrag von Sofia Ramiro
> > Gesendet: Donnerstag, 16. Februar 2012 09:14
> > An: statalist@hsphsun2.harvard.edu
> > Betreff: st: Meta-analysis pooling relative risk from relative risks possible?
> >
> >
> > Dear all,
> >
> > I would like to ask your help for the following: I would like to perform a meta-
> > analysis of some studies. However, I do not have the raw data to fill in the
> > 2X2 table. I have a Relative Risk (and correspondent 95%CI) for each study. Is
> > it possible to pool these RR and get a pooled estimate? If yes, how?
> > I have been searching online for this information, but haven't been
> > successful...
> >
> > Thank you!
> >
> > Sofia
> >
> > *
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>
>
>
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