Hello everyone I have some studies with results from the same outcome scale. I want to merge them into 1 summarised estimated result and its standard deviation. How do I do that in R? Thank you very much for your help! Frederik
Hi, It sounds like you will want to engage in a meta-analysis. There is a CRAN task view here: https://cran.r-project.org/web/views/MetaAnalysis.html that would be relevant in pointing you to tools in R that can support that approach. That being said, the details of specific methodologies and conceptual assistance would be beyond the scope of this list. You should consider consulting a local statistician for assistance with that, if needed. Regards, Marc Schwartz> On Jul 1, 2020, at 11:27 AM, Frederik Feys <frefeys at gmail.com> wrote: > > Hello everyone > > I have some studies with results from the same outcome scale. I want to merge them into 1 summarised estimated result and its standard deviation. How do I do that in R? > > Thank you very much for your help! > Frederik
Dear Frederik There is also a mailing list dedicated to meta-analysis in R https://stat.ethz.ch/mailman/listinfo/r-sig-meta-analysis// Michael On 01/07/2020 16:40, Marc Schwartz via R-help wrote:> Hi, > > It sounds like you will want to engage in a meta-analysis. > > There is a CRAN task view here: > > https://cran.r-project.org/web/views/MetaAnalysis.html > > that would be relevant in pointing you to tools in R that can support that approach. > > That being said, the details of specific methodologies and conceptual assistance would be beyond the scope of this list. You should consider consulting a local statistician for assistance with that, if needed. > > Regards, > > Marc Schwartz > >> On Jul 1, 2020, at 11:27 AM, Frederik Feys <frefeys at gmail.com> wrote: >> >> Hello everyone >> >> I have some studies with results from the same outcome scale. I want to merge them into 1 summarised estimated result and its standard deviation. How do I do that in R? >> >> Thank you very much for your help! >> Frederik > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Michael http://www.dewey.myzen.co.uk/home.html
Thank you Marc! I ended up using metafor library: res_UK <- escalc(mi=data_UK$GAD.7_mean, sdi=data_UK$weight_pred, ni=data_UK$GAD.7_mean_N, measure = "MN?) rma(yi, vi, data=res_UK, method="REML?)> Op 1 jul. 2020, om 17:40 heeft Marc Schwartz <marc_schwartz at me.com> het volgende geschreven: > > Hi, > > It sounds like you will want to engage in a meta-analysis. > > There is a CRAN task view here: > > https://cran.r-project.org/web/views/MetaAnalysis.html > > that would be relevant in pointing you to tools in R that can support that approach. > > That being said, the details of specific methodologies and conceptual assistance would be beyond the scope of this list. You should consider consulting a local statistician for assistance with that, if needed. > > Regards, > > Marc Schwartz > >> On Jul 1, 2020, at 11:27 AM, Frederik Feys <frefeys at gmail.com> wrote: >> >> Hello everyone >> >> I have some studies with results from the same outcome scale. I want to merge them into 1 summarised estimated result and its standard deviation. How do I do that in R? >> >> Thank you very much for your help! >> Frederik