Table 3.

Operative and postoperative outcomes before and after propensity score-matching

Variables	Overall cohort			Matched cohort
	MIS	Open		MIS	Open
	(n = 33)	(n = 36)	p value	(n = 23)	(n = 23)	p value
Operative time (min)*	388 (317–516)	437 (292–758)	0.2665	387 (288–509)	397 (262–584)	0.5028
Estimated blood loss (mL)*	180 (23–508)	1380 (713–2060)	< 0.001	170 (20–510)	1130 (590–2030)	< 0.0001
Conversion to open surgery	2 (6.1)	–	–	2 (8.7)	–	–
Postoperative complication (All grade)	12 (36.4)	21 (58.3)	0.0668	7 (30.4)	15 (65.2)	0.0170
Postoperative complication (CD grade ≥ 2)
All	11 (33.3)	21 (58.3)	0.0364	7 (30.4)	15 (65.2)	0.0170
Any infection	7 (21.2)	17 (47.2)	0.0218	5 (21.7)	12 (52.2)	0.0306
Surgical site infection (superficial)	0 (0)	1 (2.8)	0.2516	0 (0)	1 (4.4)	0.2353
Surgical site infection (Deep/Organ)	3 (9.1)	9 (25.0)	0.0751	3 (13.0)	7 (30.4)	0.1482
Anastomotic leakage	1 (3.0)	1 (2.8)	0.9502	1 (4.4)	1 (4.4)	1.0000
Urinary infection	2 (6.1)	8 (22.2)	0.0490	1 (4.4)	4 (17.4)	0.1428
Intestinal obstruction/ileus	2 (6.1)	1 (2.8)	0.5014	2 (8.7)	1 (4.4)	0.5468
Urination disorder	2 (6.1)	1 (2.8)	0.5014	1 (4.4)	1 (4.4)	1.0000
Others	1 (3.0)	4 (11.1)	0.1801	1 (4.4)	2 (8.7)	0.5468
Postoperative complications (CD grade ≥ 3)	2 (6.1)	8 (22.2)	0.0490	1 (4.4)	6 (26.1)	0.0319
Reoperation within 30 days after surgery	1 (3.0)	2 (5.6)	0.6034	1 (4.4)	1 (4.4)	1.0000
Mortality	0 (0)	0 (0)	–	0 (0)	0 (0)	–
Time to first flatus (days)*	2 (1–3)	2 (1–3)	0.0214	2 (1–2)	4 (1–4)	0.0307
Time to first oral intake (days)*	7 (5–8)	7 (6–9)	0.1541	6 (5–8)	8 (6–9)	0.2082
Length of postoperative stay (days)*	20 (17–23)	26 (20–35)	0.0036	20 (17–23)	26 (19–37)	0.0269

Values in parentheses are percentages, unless indicated otherwise

MIS Minimally invasive surgery, CD grade, Clavien–Dindo classification grade

*Values are median (interquartile range)