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Hi Chris, Thank you for responding to my question. Before I respond to your list of questions, I want to explain what I am trying to model. My data is made up of households nested within countries. With the code I shared initially I trying to model the contextual effect of the variable "c_polit...

Hi all, I am quite new to multilevel regression modelling. I am trying to run a random coefficient using the MCMC method with the code below. I keep getting an error that says "Unable to invert va". I have tried all the other solutions suggested on this forum with no success. Any help to f...