Table 1.

Baseline characteristics of patients.

Characteristics	Overall cohort				After propensity score-matching
	Robotic group	Laparoscopic group	t/χ2	P	Robotic group	Laparoscopic group	t/χ2	P
	n = 149	n = 233			n = 142	n = 142
Sex (male/female, N)	81/68	123/110	0.09	0.764	74/68	79/63	0.354	0.552b
Age (years)	64.1(11.2)	61.4(11.8)	2.197	0.029*	63.2(10.8)	63.4(11.3)	0.172	0.864a
BMI (kg/m2)	22.5(2.4)	22.3(2.7)	0.627	0.531	22.5(2.4)	22.5(2.7)	0.031	0.975a
History of abdominal surgery	34	49	0.171	0.679	11	9	0.215	0.643b
AJCC staging (n)			4.445	0.108			3.168	0.205b
I	24	23			21	12
II	68	127			66	76
III	57	83			55	54
Tumor location			1.381	0.71			5.684	0.128b
Ileocecal region	18	22			4	2
Ascending colon	67	115			21	29
Hepatic flexure	33	54			13	5
Transverse colon	31	42			10	12
Centers			1.733	0.42			0.465	0.793b
CenterA	61	108			61	62
CenterB	23	39			23	19
Center C	65	86			58	61

Values are expressed as mean (SD = standard deviation) or n (%)

Robotic group: robot-assisted right hemicolectomy with CME; Laparoscopic group: laparoscopic right hemicolectomy with CME;

BMI: body mass index; AJCC: American Joint Committee on Cancer

^aStudent’s t test; Pearson’s Chi squared test

*P< 0.05 was considered statistically significant.