As is evident in Table 1, AFD varied with baseline characteristics, childhood risk factors, alcohol consumption and the unadjusted incidence of AUD. Individuals who started drinking at ages 18 or older were older; less likely to be male, never have married, and have children under age 18 in the home; and more likely to be Black than those who started drinking at earlier ages. The proportion of individuals who attended/completed college increased steadily with AFD. There were strong inverse relationships between AFD and family history of psychopathology, baseline substance use, baseline psychiatric disorders, lifetime personality disorders, childhood risk factors and volume of alcohol consumption. The unadjusted incidence of alcohol abuse and dependence was lower among individuals who started drinking at ages 18 or older, but did not differ among those who initiated drinking before age 15 and at ages 15-17.
