Table S2. Comparison of median progression-free survival between groups.

Comparison	mDFS	Test value	P value
Resection vs. nonsurgical treatment	41.2±11.0 vs. 13.3±2.4	6.226	0.013
R0 resection vs. R1 resection	61.3±21.4 vs. 33.3±4.2	0.688	0.407
R0 resection vs. nonsurgical treatment	61.3±21.4 vs. 13.3±2.4	4.519	0.034
R1 resection vs. nonsurgical treatment	33.3±4.2 vs. 13.3±2.4	3.312	0.069

mDFS, median disease-free survival.