Hello!

I have a logistic regression model that keeps failing the goodness of fit test. The unweighted model does pass the test, but the weighted one does not. There are no issues with multicollinearity (the highest Pearson's r I have is 0.52). I tried different interactions that are based on the literature, but that didn't help. I suspect there might be more interactions that I am not accounting for. Is there a test in STATA that we can run to detect what interactions are present in our data? Any other ideas on what else I can try, or what's going on?