Barber-Johnson diagram

In 1973 Barber B. and Johnson D. presented a paper entitled "The Presentation of Acute Hospital In-patient Statistics" in the Hospital and Services Review. This paper started a innovative way of presenting hospital statistics by mean of combining four different variables in a unique graph. The method allowed to construct a scattergram where length of stay, turnover interval, discharges and deaths per available bed could be combined. These 4 variables have a common relationship between them and their combination in the diagram permitted a new improved way for analyzing efficiency and performance on the hospital sector. The most complete reference about how to construct the diagram could be find in Yates, John (1982). Hospital Beds. A problem for diagnostic and management?. In this book, the appendix explains in detail the way for elaborating this kind of diagrams. Useful references could be find on the web under: