jamovi

Risk Ratio/Relative Risk (RR) vs Odds Ratio (OR) meta-analysis with random effects (if I recall, it might have been fixed-effects)... If you recall, in MAJOR you get a written output of the results. When I run odds ratio it says that Cooks distance detected 1 outlier study (e.g., Ravi, 2022) when I ...

So yeah you are kinda screwed there as am I. The only option is to use Cochrane's RevMan, however you are locked to use Dersimonian-Laird estimator (DL) which, as opposed to Restricted ML (REML) is proven to suck with high heterogeneity data and will mistakenly produce significant results when there...

Hello Ravi. First, thank you for responding! What I meant was odds ratio (OR) vs relative risk (RR). Not a math expert by any stretch but it seems to me that in essence they are measuring the same thing so the Cooks distance analysis should produce similar results. And if not then I would like to kn...

My understanding is that you can't do this with the MAJOR package yet and it is so sad... It also really sucks that you can't unlog the forest plots. It also sucks that online for metafor R there is only an RR or OR example to copy Cochrane's vastly superior forest plot design and not for mean diffe...

That would be amazing if this was added. However team is pushing for publication so september will be too late for the work I am doing at the moment. I've now managed to implement the forest plot in R. Unfortunately I can only create Revman forest plots for OR or RR not for mean difference. It becom...

Hello so I get a significant outlier detected with cooks distance when I do OR but not when I do RR. Is this a bug or is there a specific mathematical reason why that is? What should I report?

Regards,

Achilleas

I also figured out what estimator RevMan uses: Dersimonean & Laird (DL) whilst I've read a couple of studies which say Restricted Maximum Likelihood is superior to DL. Cool! Now I really want to ditch RevMan. However, I do really like the forest plots from Revman. Someone recreated them in Metaf...

I think I figured it out. It is because its log risk ratio while in Revman its not log risk ratio. I just don't get why jamovi uses log. There is only an option to remove log with odds ratio not risk ratio. And even if I chose odds ratio un-log option it only does this with the stats and not the for...

Why do they differ so much? I've used fixed effects in both A total of k=8 studies were included in the analysis. The observed log risk ratios ranged from -1.5404 to 0.0000, with the majority of estimates being negative (62%). The estimated average log risk ratio based on the fixed-effects model was...