Portal vein-based subsegmental classification of liver segment four for parenchyma-sparing laparoscopic resection: A retrospective study

Figure 10  Exploratory Kaplan-Meier survival analysis in the comparator dataset. A: Overall survival in the conventional and novel groups. No statistically significant difference was observed (log-rank P = 0.22); B: Progression-free survival in the conventional and novel groups. No statistically significant difference was observed (log-rank P = 0.21). Numbers at risk (number censored) are presented below each curve. Given that the comparator grouping was closely linked to anatomical subtype rather than an independent treatment strategy, these analyses should be interpreted as exploratory.