The diagnostic interview included basic demographic information, questions regarding treatment received for SUD or other mental health problems since the 5-year follow-up interview (Time 2), drinking any alcohol and driving “when you thought you might be over the legal blood alcohol limit for drunk driving” in the past 3 months, and lifetime and current (12-month) symptoms of alcohol or drug use disorders. The Composite International Diagnostic Interview (CIDI)26-28 was used to obtain 12-month SUDs and age of onset. The CIDI estimates prevalence rates of specific psychiatric disorders and was designed to be easily understood and appropriate for use by nonclinician interviewers. The scripted and close-ended questions are appropriate for people with an 8th grade reading level. We used the 10th revision that provides the DSM-IV29 diagnoses based on an individual’s responses.
