The third goal was to provide rates of individual diagnoses by risk group, for each developmental period (childhood [8–11] and adolescence [12–18]) (See Table 5). Our fourth goal was to examine the age of onset of disorders in association with risk group. Because the participants entered the study at varying ages and the age at most recent follow-up varied, Kaplan-Meier models were used allowing for censoring the data (Figure 1). Data were collected annually through age 19 allowing for determination of onset to within one year.
