Table 2 shows adjusted prevalence rates of psychiatric disorders among respondents. Relative to those with CUD only, respondents with CUD + ND were significantly more likely to meet criteria for bipolar disorder, Clusters A and B personality disorders, and narcissistic personality disorder. Relative to those with ND only, respondents with CUD + ND were significantly more likely to meet criteria for bipolar disorder, anxiety disorders, any personality disorder, Clusters A and B personality disorders, and paranoid, schizotypal, narcissistic, and borderline personality disorders. The prevalence of antisocial personality disorder did not differ in CUD + ND respondents relative to CUD only or ND only respondents. Although dependent personality disorder was significantly more prevalent in the CUD + ND respondents than in CUD only and ND only respondents, the 95% confidence intervals surrounding the estimates were wide, suggesting imprecise estimates.