Peer drinking obtained at the 2 year follow-up used items from the Important People and Activities Scale (Longabaugh et al., 2001) regarding the participant’s perception of the drinking status of up to 4 close peers on a 5 point scale ranging from abstainer to heavy drinker along with an scale from 0 (not at all) to 7 (daily) drinking, and their maximum drinks on a 5 point scale from 0 (doesn’t drink) to 4 (≥10 drinks per occasion).
