Skip to main content
. Author manuscript; available in PMC: 2017 Mar 27.
Published in final edited form as: J Thorac Oncol. 2016 Sep 8;12(3):578–584. doi: 10.1016/j.jtho.2016.08.143

Figure 2.

Figure 2

Partial receiver operating characteristic curves for the MAYO model and with EarlyCDT-Lung added using the both-positive rule. Curves are shown for the MAYO model only (black line); the MAYO model plus EarlyCDT-Lung (dashed line); the proportional line, which is the theoretical line if EarlyCDT-Lung was added to the MAYO model in a strictly proportional (independent) manner (dotted line); and the random line of no diagnostic discrimination (thin black line). Below approximately 8% on the x axis (92% specificity) the combined model and autoantibody test show improved sensitivity at the same specificity. The proportional line follows the observed line quite closely (inclusive cohort, 4 mm–20 mm [n = 208]).