Probands were assessed for lifetime DSM-III-R alcohol abuse and dependence at each follow-up using an interview similar to the SSAGA instrument. If positive for AUD, the instrument probed the earliest age at which diagnostic criteria were met for AUD. That interview has Cronbach’s alpha >.85, 1-wk reliabilities ~.8 for substance disorders, and correlations with diagnoses from the SCAN average ~.7 (Bucholz et al., 1994). Through the T25 assessment, 35.0% of this sample had been diagnosed with an AUD at some point in their lifetime.
