After describing the pattern of appearance of problems for all participants, the similarity in the retrospective reports of the age of first appearance of problems was compared utilizing Spearman's rank order correlation (rho), which measures the degree of similarity of the order of the events across groups of subjects. Additionally, we tested the hypothesis that school suspensions/expulsions would be more likely in males and in the African American and American Indian subgroups and would be associated with higher overall antisocial symptom counts. In those analyses participants who had been suspended/expelled from school were compared on: race, sex, economic status, diagnosis (AABS vs. ASPD), whether they also endorsed being arrested, and their total antisocial symptom counts to those who had not experienced school suspension/expulsion, using chi square for dichotomous variables and ANOVA for continuous variables. Significance for all analyses was set at p< 0.001 to correct (Bonferonni) for multiple comparisons of the 29 antisocial behaviors.
