Within group vs between group analysis of trial data and the way too many studies get it wrong

In my takedown analysis in the last post of two papers on morton’s neuroma, I pointed out that both studies were analysed wrong and that this should have been pulled up in the pre-publication peer review process and it wasn’t. Also, in my other blog I pulled up a number of studies on the same issue.

Understanding the difference between a ‘within group’ analysis vs a ‘between groups’ analysis can be confusing, so I put this video together describing them. Hopefully you can see what the two studies reviewed here and the multiple studies reviewed here got it wrong.

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