The Addiction Severity Index - Lite version (ASI-Lite) is a shortened version of the Addiction Severity Index (ASI). The ASI is a semi-structured instrument used in face-to-face interviews conducted by clinicians, researchers or trained technicians. The ASI covers the following areas: medical, employment/support, drug and alcohol use, legal, family/social, and psychiatric. The ASI obtains lifetime information about problem behaviors, as well as problems within the previous 30 days. The ASI-Lite contains 22 fewer questions than the ASI, and omits items relating to severity ratings, and a family history grid. It can be administered in approximately 30 minutes.