I wonder if anyone can help me with the commands for diagnostics and model fitting for a multi level mixed effects logistic regression please. The command fitstat won't run (I have downloaded it).
I am trying to produce AIC and BIC to explore and improve my model fit.

My command so far looks like this

melogit D6binary i.var1 i.var2 var3 var4 var5 var6 ||OrgCode:, or

any advice greatly appreciated, thank you