The analyses thus far suggested that, although some disruptive youth meet diagnostic criteria for both ODD and CD across the late childhood/mid-adolescent years, many present with only one of these disorders. We explored whether these groups could be distinguished on the basis of symptom patterns, selected risk factors and rates of comorbid disorders in childhood and adolescence. Because numbers in the three sub-groups meeting criteria for both ODD and CD over the study period were small, we combined these cases (ODD→CD, ODD/CD and CD→ODD) into a single grouping for these comparisons.
