I have a question regarding the output for my mediation analysis. I am new to the zero-inflated models and mediation analysis. I apologize if my questions are elementary.
My mediation model is zero-inflated poisson (hereafter, zip) and my outcome model is logistic regression. The output is attached here.
predictor = disc_pFreq
mediator = disc_sFreq
outcome = letterV_occur
My understanding about the mediation is presented in a path diagram attached here.
From the brms output, there is only one estimate for Y ~ M. My question is how to interpret the relationship between M and Y in brms. It seems that M is not decomposed into 2 parts (poisson and logit) when predicting Y. Is that so? Thank you very much for your help!