... 5Research Application of a population-based severity scoring system to individual patients results in frequent misclassificationFrank V Booth1, Mary Short2, Andrew F Shorr3, Nancy Arkins4, ... USA3Associate Director of Pulmonary Critical Care Medicine, Pulmonary and Critical Care Medicine, Washington Hospital Center, Washington, DC, USA and Associate Professor of Medicine, Georgetown ... element of the scenario was a narrative summary of thepatient's clinical course. In many cases this summary con-tained items of relevance to the calculation of an APACHE IIscore, such as times...