Fig 2. Nomogram of the Early Dengue Classifier (EDC) to predict the risk of dengue.

A horizontal line from a predictor value to the “Points” axis assigns points to the 3 required variables age, platelet count (PLT), and white blood cell count (WBC). The sum of these points (total points) can then be translated to the corresponding predicted risk of dengue. As an example, a 9-year-old patient with a PLT of 100x10³/mm³, and a WBC of 5x10³/mm³ has a score of 15+32+84 = 131, and the corresponding risk of dengue is about 70%. Note: As <1% of patients had platelet (PLT) count >500x10³/mm³ or white blood cell (WBC) count >30x10³/mm³, for better visualization, PLT and WBC counts were truncated at 500x10³/mm³ and 30x10³/mm³ respectively.