I am designing a clinical observational study. My statistical analysis plan is to use a Bayesian modelling framework. However, I have not come across practical tutorials on sample size calculations using Bayesian framework unlike the Frequentist formulas which are straight forward.
I have read some papers describing various criteria such as the worst outcome criterion (WOC), Average length criterion (ALC) and Average coverage criterion (ACC) but not provides code for practical use.
I am wondering whether practical resources exist on Bayesian Sample size estimation for observation studies.