Logistic regression models adjusting for participant’s most recent age, familial household income, mother’s and father’s education, and mother’s and father’s lifetime history of alcohol-related problems were conducted to test for differences in rates of alcohol and other substance use, endorsement of one or more AUD symptoms, proxy DSM-5 AUD diagnosis, psychopathology, and trauma exposure by race/ethnicity. Independent t-tests were conducted to test for differences in age at first use, age at onset of first AUD symptom, age at onset of AUD diagnosis, and rates of transition from first use to first symptom and AUD diagnosis by race/ethnicity. All analyses were conducted taking familial clustering into account using the cluster command as implemented in Stata (StataCorp, 2007).
