Students indicated at each survey whether they had ever consumed a full drink of alcohol and provided the age at which this happened. We took the minimum age reported across all waves.1 Based on concerns about the validity of responses indicating consumption at an extremely young age, age was bottom coded as “six and under” (n=3). The mean age of first drink was 13.2 years (SD=1.9; range 6–17); 25.0% (230/931) reported consuming a full drink (28.7% of girls, 20.3% of boys).