The addition of family environment variables to the model (Model 2, displayed in Table 3) yielded evidence that maternal rule inconsistency was associated with membership in all three affected classes. Childhood physical or sexual abuse was associated with membership in the AUD-MDD-ANX and SUD-CD classes, and lack of closeness to father was associated with membership in the SUD-CD class. There was evidence of an association between lack of closeness to mother and membership in the SUD-CD class.