We categorized children according to six ‘pathways’ in diagnoses of ODD and CD across childhood and adolescence. Distinctions were made between [1] children who never met criteria for CD or ODD, [2] those who received at least one diagnosis of ODD during the study period but never met full criteria for CD, [3] those who met criteria for CD but not ODD, and three groupings of youth who met criteria for both disorders: [4] ODD preceding CD, [5] both disorders onset at the same assessment wave, and [6] CD preceding ODD. In later analyses categories 4-6 were collapsed into a single ODD/CD category.
