The Pittsburgh Girls Study (PGS; N=2,450) is an urban community sample, oversampled for low-income neighborhoods, of four female age cohorts (ages 5–8 at wave 1). Girls and their primary caregivers were assessed annually via an accelerated longitudinal design. Details of PGS sample ascertainment have been reported in prior publications [29,30]. Briefly, participants were recruited in 1999–2000, with 85.2% of eligible families completing the first wave of data collection. PGS sample retention was high: 88.5% on average over the years that alcohol data used in the current analyses were collected (2003–2010), when girls were 11–17 years of age. As our interest is in differences between Black and White girls, the current study excluded the small subsample (n=145) identified as other race (from primary caregiver’s report of girl’s race). We excluded an additional 238 cases that did not meet our criteria for the minimum range of assessment measures and years of coverage to capture trauma histories (described in method section), resulting in a final analytic sample of 2,068 girls (57.7% Black, 42.3% White). A larger proportion of White than Black participants were
