Each follow-up took approximately 30 to 40 minutes to complete, including 20 to 25 minutes for self-report measures and 10 to 15 minutes for an interview. Self-report measures were completed by a Web-based program or by a mailed packet and included items for demographic updates and estimates of drinking quantity, frequency, and maximum quantity, the AUDIT, and the Drinker Inventory of Consequences—Recent (37). The interview was completed by telephone or online calling with a trained staff member and included a Timeline Follow-Back for the previous four Monday-to-Sunday weeks and SCID modules for past year incidence of the 11 items comprising DSM-IV AUDs (abuse and dependence) for years 1, 2, 5, and 6 (there was no follow-up at year 3, and SCID at year 4 to minimize participant burden). Compensation for each follow-up was a $40 gift card with a $20 bonus for timely completion.
