Evaluation of Efficacy
The primary endpoint was complete abstinence maintained for the 24-week study drug treatment period. Secondary endpoints were cumulative days of abstinence during the 24-week study drug treatment period, time elapsed between initiation of study drug treatment and first relapse regardless of the type or amount of alcohol consumed, and time elapsed between initiation of study drug treatment and the third day of 3 or more consecutive days of heavy drinking (defined as equivalent to 60 g/d or more of pure alcohol).