Popis: |
Cumulative frequency diagrams display the magnitude of a symptom or sign, as well as the frequency, thus adding another dimension to the graphic figure. One particular sign, like e. g. splenic enlargement in different diseases, may be illustrated by different curves of cumulative frequency. With careful selection of the most useful parameters for comparison, such diagrams can be a valuable teaching aid in differential diagnosis. These diagrams would be a happy alterative to some of the overwhelming tables used in many text books. |