6. Current drug or alcohol dependence as evidenced by a four-question screening interview to determine whether the subject has had medical, occupational, or family problems related to alcohol or illicit drug use during the past 12 months. These questions are derived from the Drug Abuse Screening Test (DAST 10) developed by the Addiction Research Foundation and recommended by the National Institute for Drug Abuse as a tool for family physicians who wish to routinely screen new patients for drug abuse.