Basic demographic measures gathered at Wave 1 (full survey sample) included: biological sex (coded 0 = female [59.9%], 1 = male) and Race (White [53.9%], Asian, [18%], Histpanic/Latino(a) [15.2%], African American [4.1%], Other/Multiethnic [7.1%], missing or not provided [1.6%]). A small number of participants who provided DNA did not provide self-report ethnicity at Wave 1, but did at later waves. The total available pool of non-Hispanic Whites included in the externalizing phenotype model was N = 1223.
