The current study is the initial step in future plans to locate and carry out extensive evaluations with all available COGA subjects enrolled in the first phases of our protocol, including a battery of electrophysiological measures. The first step in that process was to select a subsample from the greater than 10,000 participants and demonstrate that they can be located, determine the proportion still alive, describe the alcohol-related outcomes for the survivors, and evaluate their willingness to participate in future follow-ups.
