The situation of Objective Medical Decision Making in the E.E.C. at the present time is as follow. In almost every E.E.C. country there are centres involved in gathering data on various diseases. Acute Abdominal Pain, Jaundice, Diabetes and Cardiovascular Diseases are the favourites. However, very few of these centres cooperate with each other in the sense of constructing common databases or evaluating one system against another.