Robotic vs laparoscopic abdominoperineal resection for rectal cancer: A propensity score matching cohort study and meta-analysis

Table 1 Baseline characteristics after propensity score matching, n (%)

	Group RS (n = 42)	Group LS (n = 42)	P value
Age (yr)1	63.5 (55-69)	65 (57.8-72.3)	0.211
Sex			1.000
Male	32 (76.2)	32 (76.2)
Female	10 (23.8)	10 (23.8)
BMI2	22.5 (2.03)	22.6 (2.41)	0.815
COPD	8 (19)	8 (19)	1.000
Hypertension	11 (26.2)	9 (21.4)	0.608
Diabetes mellitus	2 (4.8)	4 (9.5)	0.397
Coronary artery disease	1 (2.4)	2 (4.8)	0.557
ASA Grade			0.890
1	5 (11.9)	4 (9.5)
2	22 (52.4)	24 (57.1)
3	15 (35.7)	14 (33.3)
Neoadjuvant therapy received	9 (21.4)	8 (19)	0.786
Distance between tumor and AV (cm)1	3 (2-5)	3 (2.5-4)	0.996
Stage			0.969
I	10 (23.8)	10 (23.8)
II	16 (38.1)	15 (35.7)
III	16 (38.1)	17 (40.5)

¹Values are median (interquartile range: 25^th-75^th percentile).

²Values are mean (SD).

Values in parentheses are percentages, unless indicated otherwise. ASA: American Society of Anesthesiologists physical status classification; AV: Anal verge; BMI: Body mass index; COPD: Chronic obstructive pulmonary disease; RS: Robotic surgery; LS: Laparoscopic surgery.