The sample had a moderately high rate of mental disorders. Fifty-eight percent of defendants had at least one axis I or axis II diagnosis. The most common diagnosis was a substance use disorder (47%),and a majority of those with such disorders (1001132; 76%) had no other axis I disorder. Among the 17% of defendants with a nonsubstance use axis I disorder, the most common were affective disorders, 71% of which were a depressive disorder. A small number of defendants (N=IO;4% of the total sample) had a psychotic disorder. Only 5% of the sample. had a diagnosis of antisocial personality disorder.