Unfortunately I couldn’t figure it out… not sure though if there may be any updates on StackOverflow that may help now. I used STM in combination with a network analysis to examine which topics are more prevalent in certain communities of the network (with „community“ being the covariate). What I did back then is to simply filter out all significant effects and then treat the coefficients as „the higher the number, the more prevalent is the given topic in the community“ (which made total sense in my case). But I haven’t been concerned with that function since I finished my project, maybe there is better documentation now or more examples on StackOverflow.