FIGURE LEGENDS
Figure 1. The learning curve of robot-assisted laparoscopy for recurrent cervical cancer. The X-axis indicates the number of procedures performed. The Y-axis indicates the cumulative sum of success and failure of the surgical team in terms of recurrence, adjusted for the probabilities from the risk model. The RA-CUSUM+ (red) is designed to detect decrease in surgical performance while RA-CUSUM- (blue) is designed to detect increase in the surgical performance. Both curves move upward for surgical failure and downward for surgical success.
Figure 2. Kaplan-Meier survival curves for patients treated during the learning phase (blue) or the experiences phase (green). (A) Five-year disease-free survival. (B) Five-year disease-specific survival. (C) Five-year overall survival.