Table 5 indicates that pleading guilty was not associated with any of the variables when only demographic and historical factors were included in the model. When clinical factors were added, having a prior violent offense lowered the odds of pleading guilty, while prior psychiatric treatment was associated with a higher odds of pleading guilty, although the clinical variables as a group and the overall model were not significant. When offense psychotic disorders in particular is reasonable, given the unselected nature of our sample. Our observed rate of psychotic disorders (4%) was below the rate of approximately 6.5% observed in some other studies (19, 22). The prevalence rate of mental disorders (58%) in this sample of defendants, however, still greatly exceeded the rate of 25% found in the general population in the United States (23).