At the 5-year follow-up, 187 individuals (98.4%) continued to participate, and telephone re-screening was conducted to determine eligibility for re-examination. Most participants (95%, 178/187) remained eligible: they were current drinkers with no major medical or psychiatric contraindications. From this eligible subject pool, 156 (88% of those eligible, 83% of the original sample) returned to participate in re-examination sessions. Participants undergoing re-examination did not differ from those who did not on major background characteristics or geographical location (all ps >.23). As needed, transportation (airfare, local transport, etc.) and lodging arrangements were provided by the study. Supplemental Figure S1 shows the CONSORT diagram.
