In the present study, we restricted attention to the 352 adolescents (of 448 in the original study) who (1) had complete family history data for at least one biological parent, and (2) returned for at least one follow-up visit beyond baseline. No differences were observed between the 352 participants included in this report and the 96 excluded in terms of the primary demographic variables of interest (i.e., hospitalization site, age, sex, racial distribution, usage of public assistance, or either parent’s level of education). Similarly, no differences between these groups were observed for baseline clinical characteristics (severity of suicidal ideation, depressive symptoms, internalizing or externalizing problems, and suicide attempt history).
