norms over follow-up: average binge-drinking frequency throughout follow-up was 62% and 40% of days, respectively, compared with 28% of days in the low AUD group. Furthermore, these groups averaged 6.6 and 3.2 AUD symptoms, respectively, during their heaviest follow-up. Extrapolating to the new DSM-5, these would correspond to mild to severe AUD (44). The 6-year follow-up interval therefore provided a more comprehensive picture than in our original report of 2 years of follow-up (16) and support the link between alcohol response and progression of excessive drinking, particularly during the developmental transition to entering early middle adulthood.
