All in-patients at the University of Washington Medical Centre, USA are supplied with "were you satisfied" questionnaires. A similar questionnaire is sent out to randomly selected out-patients and casualty patients. The survey asks, for instance, how satisfied the patient was with the courtesy of admitting staff and with the doctor's ability to listen and answer the patient's questions. It also asks whether nurses introduced themselves at the start of each shift, and whether staff treated the patients as they would have liked to be treated themselves. The hospital won the Medical Social Inventions Award 1993 of the Institute for Social Inventions.