Greetings,

I'm running Stata 15.1 on a Mac OS. I'm trying to determine whether a model with mediator A is superior to a model with mediator B (both mediators are strongly related and I want to determine whether one fits the model better than the other). Does anybody know how to go about calculating 95% CIs for R^2? My friend said such a function is available in RStudio, but I've been having trouble finding one in Stata. Your assistance is thus greatly appreciated. Thanks in advance!