[R-meta] Calculating odds ratios in bivariate meta-analysis.

Olina Ngwenya o||n@@ngweny@ @end|ng |rom m@nche@ter@@c@uk
Mon Mar 21 11:13:47 CET 2022

Dear Wolfgang

Thank you for your response. I felt like the escalc() with measure ="OR" , is used for univariate meta-analysis and I thought there is another function used to calculate odds ratios in bivariate/multivariate meta-analysis.



-----Original Message-----
From: Wolfgang Viechtbauer <wolfgang.viechtbauer using maastrichtuniversity.nl> 
Sent: 20 March 2022 22:36
To: Olina Ngwenya <olina.ngwenya using manchester.ac.uk>
Cc: r-sig-meta-analysis using r-project.org
Subject: Re: [R-meta] Calculating odds ratios in bivariate meta-analysis.

Dear Olina,

Not sure where exactly the problem is, but escalc() with measure="OR" 
computes log odds ratios and measure="PLO" computes log odds.


> Hello R-sig-meta-analysis folks,
> I am doing a random effects multivariate model (bivariate)  for binary 
> outcomes, pregnancy and live birth (similar to this analysis:
> https://www.metafor-project.org/doku.php/analyses:berkey1998, the 
> difference is that berkey1998 outcomes are continuous). Now for 
> bivariate analysis of binary outcomes, I want odds ratios and have not 
> found the way of getting log odds and odds ratio like in the 
> univariate analysis (for example the output for rma.peto).
> Thank you
> Regards
> Olina Ngwenya Research Assistant Centre for Biostatistics | School of 
> Health Sciences | Faculty of Biology, Medicine and Health | University 
> of Manchester

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