Seems analogous to how, in the missing data literature, reasonable folks recommend a complete case analysis alongside any fancy imputation? Can be useful to see what the adjustment is doing descriptively, or even in terms of broader sensitivity/robustness checks ("totality of evidence" and all that)

Other applications of hierarchical models here for borrowing across different regions of the world.

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Sweet, thanks!

Thanks!

Don't remember having seen Dirichlet processes used this way, any chance you could point to a rationale and/or implementation? Thanks!

Added a small section on tau

Depends on the model, of course, but with a simple post ~ pre + treatment, I don't immediately see why you couldn't put an informative prior on pre (and/or treatment, given relevant data)?

Sure, I think you could just borrow information for the controls on the raw scale?

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