Kaplan-Meier curves comparing the probability of difference between the manual reading 1 vs. manual reading 2 (in black), the mean of manual readings vs. old macro (in red) and mean of manual readings vs. new procedure (in green). The X axis represents count differences between the two methods or readings compared and the Y axis represents the probability of observing these differences. DIs have been grouped according to their complexity and their background level: (A1) low-complexity DIs with background, (A2) low-complexity DIs without background, (A3) high-complexity DIs with background and (A4) high-complexity DIs without background.
Lejeune et al. Diagnostic Pathology 2013 8(Suppl 1):S13 doi:10.1186/1746-1596-8-S1-S13