As seen in Table 2, prevalence and timing of alcohol use initiation differed significantly by race, with lower prevalence and slightly later onset of alcohol use in Black vs. White girls (37.7% vs. 54.4%; mean age of 15.29 vs. 15.04 years). A higher proportion of Black vs. White primary caregivers endorsed indicators of low SES. Prevalence of childhood trauma, under both definitions, was higher in Black girls (24.3% vs. 15.5% for interpersonal and 29.0% vs. 17.5% for broadly defined childhood trauma). Neighborhood safety and cohesion were rated lower by primary caregivers and neighborhood physical disorder was rated higher by interviewers for neighborhoods where Black participants resided.
