Several methods have shown to work including quantity-frequency interview questions and questionnaires such as CAGE, the AUDIT, and the MAST. The CAGE is a well-established and simple method of screening for alcohol problems. It was designed (in 1970) for use by people such as doctors to quickly identify whether a patent may have a drink problem. The questions are designed to be put to anyone whose overall level of consumption is at a level considered risky or harmful. The Alcohol Use Disorder Identification Test (AUDIT) was developed by the World Health Organization to identify persons whose alcohol consumption has become hazardous or harmful to their health. Developed in 1971, the Michigan Alcohol Screening Test (MAST) is one of the oldest and most accurate alcohol screening tests available, effective in identifying dependent drinkers with up to 98% accuracy. Questions on the MAST test relate to the patient’s self-appraisal of social, vocational, and family problems frequently associated with heavy drinking.