[R-meta] Fwd: Question on Umbrella review and other types

[Dr. Gerta Rücker]

Yes,I have noted that the word "umbrella" has experienced a change of meaning over the last years. In former times (that is, before network meta-analysis became popular) it meant to conduct a number of pairwise meta-analyses for different treatments for the same condition in the same review. Since this is now better done using network meta-analysis, they now use the term for something different, namely overview of overviews, and this is what the original poster meant.

As I understand, in the described situation, a re-analysis is planned, thus I am not sure whether a special R package is needed. 

Best,
Gerta

UNIVERSITÄTSKLINIKUM FREIBURG
Institute for Medical Biometry and Statistics

Dr. Gerta Rücker
Guest Scientist

Stefan-Meier-Straße 26 · 79104 Freiburg
gerta.ruecker using uniklinik-freiburg.de

https://www.uniklinik-freiburg.de/imbi-en/employees.html?imbiuser=ruecker


-----Ursprüngliche Nachricht-----
Von: Michael Dewey <lists using dewey.myzen.co.uk> 
Gesendet: Montag, 22. April 2024 17:23
An: R Special Interest Group for Meta-Analysis <r-sig-meta-analysis using r-project.org>
Cc: Dr. Gerta Rücker <gerta.ruecker using uniklinik-freiburg.de>
Betreff: Re: [R-meta] Fwd: Question on Umbrella review and other types

There is a package https://cran.r-project.org/package=metaumbrella on 
CRAN which performs umbrella reviews. Whether what they mean by umbrella 
is what you mean is open to question.

Michael

On 22/04/2024 15:44, Dr. Gerta Rücker via R-sig-meta-analysis wrote:
> Hi (whoever you are),
> 
> If you want to repeat the old meta-analysis anyway, assuming that all studies adhere to some common well-defined inclusion criteria,  then why not conducting a meta-analysis including the union of all studies included in the two older reviews and the new studies? This would simply be an updated review, not necessarily an umbrella review.
> 
> Best,
> Gerta
> 
> 
> UNIVERSITÄTSKLINIKUM FREIBURG
> Institute for Medical Biometry and Statistics
> 
> Dr. Gerta Rücker
> Guest Scientist
> 
> Stefan-Meier-Straße 26 · 79104 Freiburg
> gerta.ruecker using uniklinik-freiburg.de
> 
> https://www.uniklinik-freiburg.de/imbi-en/employees.html?imbiuser=ruecker
> 
> -----Ursprüngliche Nachricht-----
> Von: Im via R-sig-meta-analysis <r-sig-meta-analysis using r-project.org>
> Gesendet: Montag, 22. April 2024 15:47
> An: r-sig-meta-analysis using r-project.org
> Cc: Im <aligners79 using gmail.com>
> Betreff: [R-meta] Fwd: Question on Umbrella review and other types
> 
> ---------- Forwarded message ---------
> From: Im <aligners79 using gmail.com>
> Date: Mon, Apr 22, 2024 at 12:56 PM
> Subject: Question on Umbrella review and other types
> To: <r-sig-meta-analysis using r-project.org>
> 
> 
> 
> Hello!
>   I am planning to do an Umbrella review.
> 
> The number of systematic/meta analysis are two. Rest of the studies are 3-4
> new studies published after or almost at same time of these two reviews.
> 
> My question is can I conduct the Umbrella review ? If not then is there any
> other type of review that could be performed ?  I want to include the
> previous systematic/meta reviews. I also plan to repeat already performed
> meta-analysis. Can I add the meta analysis studies HRs and new studies to
> make another meta-analysis ?
> 
> Please guide me which review could be the best in this situation.
> best regards
> 
> 	[[alternative HTML version deleted]]
> 
> _______________________________________________
> R-sig-meta-analysis mailing list @ R-sig-meta-analysis using r-project.org
> To manage your subscription to this mailing list, go to:
> https://stat.ethz.ch/mailman/listinfo/r-sig-meta-analysis
> _______________________________________________
> R-sig-meta-analysis mailing list @ R-sig-meta-analysis using r-project.org
> To manage your subscription to this mailing list, go to:
> https://stat.ethz.ch/mailman/listinfo/r-sig-meta-analysis
> 
> 

-- 
Michael