Table 5.

Patterns of recurrences before and after propensity score matching

	Before propensity score matching			After propensity score matching
	Open (n = 1239)	Laparoscopic (n = 1010)	p	Open (n = 683)	Laparoscopic (n = 683)	p
Systemic recurrence	186 (15.0)	84 (8.3)	< 0.001	95 (13.9)	60 (8.8)	0.004
Recurrence type			0.007			0.138
Liver	62 (5.0)	28 (2.8)		29 (4.2)	21 (3.1)
Peritoneal seeding	32 (2.6)	16 (1.6)		13 (1.9)	13 (1.9)
Paraaortic lymph node	31 (2.5)	12 (1.2)		20 (2.9)	9 (1.3)
Lung	18 (1.5)	16 (1.6)		14 (2.0)	8 (1.2)
Ovary	6 (0.5)	4 (0.4)		4 (0.6)	2 (0.3)
Local recurrence	38 (3.1)	9 (0.9)	< 0.001	22 (3.2)	6 (0.9)	0.003
Recurrence type			0.004			0.002
Anastomosis site	26 (2.1)	4 (0.4)		16 (2.3)	1 (0.1)
Trocar site	1 (0.1)	1 (0.1)		1 (0.1)	1 (0.1)
Pancreas lymph node	1 (0.1)	0 (0.0)		1 (0.1)	0 (0.0)