Message-ID: <199680032.30160796.1592180939586.JavaMail.zimbra@agroparistech.fr>
Date: 2020-06-15T00:28:59Z
From: Norman DAURELLE
Subject: [R-meta] Publication bias/sensitivity analysis in multivariate meta-analysis
In-Reply-To: <6adf0743-ce6d-b8de-eac8-2e5b31424051@dewey.myzen.co.uk>
Hi all, I read this thread, and the topic interests me, but I didn't quite understand your answer :when you say " Publication bias is a subset of small study effects where you know the
aetiology of the small study effects. If you do not then it is safer to
refer to small study effects. "
I don't really understand what you mean.I thought publication bias meant that the studies included in a sample of study didn't really account for the whole range of possible effect sizes (with their associated standard error).Is that not what publication bias refers to ? And if it is, how does it also correspond to the definition you gave ?Thank you !Norman.
----- Mail d'origine -----
De: Michael Dewey <lists at dewey.myzen.co.uk>
?: Huang Wu <huang.wu at wmich.edu>, r-sig-meta-analysis at r-project.org
Envoy?: Sun, 14 Jun 2020 12:54:30 +0200 (CEST)
Objet: Re: [R-meta] Publication bias/sensitivity analysis in multivariate meta-analysis
Dear Huang
Comments in-line
On 13/06/2020 20:57, Huang Wu wrote:
> Hi all,
>
> Greetings. I have some questions about publication bias/sensitivity analysis. First, are publication bias and sensivity analysis the same thing? If not, how are they different?
Publication bias is a subset of small study effects where you know the
aetiology of the small study effects. If you do not then it is safer to
refer to small study effects. A sensitivity analysis could be almost
anything but usually it manes fitting the model to one or more data-sets
similar to the original one. Examples are leave-one-out analysis, or
using only a subset of supposed higher quality studies.
> Second, I saw people use funnel plot, fail-safe N, Egger?s regression test to test publication bias (http://www.metafor-project.org/doku.php/features), are these methods applicable to multivariate meta-analysis?
Yes they are.
Thanks.
> Third, what do you recommend to do publication bias/sensivity analysis in multivariate meta-analysis? Thanks
>
I think what analysis you do will depend on the scientific question.
Michael
> Best wishes
> Huang
>
> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>
>
> [[alternative HTML version deleted]]
>
>
>
>
> _______________________________________________
> R-sig-meta-analysis mailing list
> R-sig-meta-analysis at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-meta-analysis
>
--
Michael
http://www.dewey.myzen.co.uk/home.html
_______________________________________________
R-sig-meta-analysis mailing list
R-sig-meta-analysis at r-project.org
https://stat.ethz.ch/mailman/listinfo/r-sig-meta-analysis
[[alternative HTML version deleted]]