What is a Nomogram?
The short description of a nomogram is, a graphical means of displaying the resulting values of more complex equations and calculations, similar in principle to the slide rule. Collecting diagnostic information from multiple sources is a hallmark of modern evidence-based assessment practices. However, combining the results for the purpose of interpreting, illustrating, and describing the overall perspective can be difficult. In addition to using likelihood ratios as a more useful way to express the sensitivity and specificity of each test result, we can also efficiently combine the results from multiple measures, using the likelihood ratios and incrementally graphing each effect on a nomogram, into an overall cumulative probability. See our Clinical manual or the ROC of PADDS page for a more complete description.
