In this paper, our first aim is to describe this completed pilot study’s logistics, compare subjects whose whereabouts remained uncertain (after 12 months of effort) against located individuals (either contacted or confirmed deceased), and gauge likely participation in a subsequent follow-up study. Our second aim is to descriptively characterize interviewed subjects’ current living circumstances; mental and physical health; alcohol consumption, problems, and treatment, by age group. In particular, three hypotheses are examined: older subjects who are relatives of current younger COGA participants will be easier to locate than older individuals who lack such a family connectionthe majority of located living subjects will express willingness to take part in a subsequent follow-up studyfewer subjects in the older age groups will be current drinkers than subjects in the younger age groups, and, among older current drinkers, fewer will exhibit problematic alcohol use than their younger counterparts (Breslow et al., 2017; Grant et al., 2017; Knott et al., 2018; Valiant, 2003; Vestal et al., 1977).
