Comparative analysis of the short and medium-term efficacy of the Da Vinci robot versus laparoscopic total mesangectomy for rectal cancer

Table 2 Comparison of intraoperative and postoperative outcomes of rectal cancer patients

Clinical indicators	L-TME group (n = 112)	R-TME group (n = 128)	Statistical	P value
Conversion to laparotomy	6	1	χ2 = 4.417	0.036
Complications			χ2 = 7.290	0.007
Yes	36	22
Not	76	106
Complications Clavien-Dindo			χ2 = 6.847	0.144
Class I	95	118
Class II	3	2
Class III	14	6
Class IV	0	1
Level V	0	1
Postoperative complications
Anastomal fistula	13	5	χ2 = 5.106	0.024
Anastomotic bleeding	3	2	χ2 = 0.365	0.546
The anastomotic is narrow	4	2	χ2 = 0.989	0.32
Urinary tract infections	2	1	χ2 = 0.488	0.485
Urinary retention	3	2	χ2 = 0.365	0.546
Ileus	8	6	χ2 = 0.656	0.418
Infection of the incision in the abdominal wall	2	3	χ2 = 0.091	0.763
Pulmonary embolism	0	1	-	1
Sexual dysfunction	1	0	-	0.467
Length of postoperative hospital stay (d)	17 (3)	6 (2)	Z = -2.541	0.011

L-TME: Laparoscopic total mesorectal resection; R-TME: Robotic total mesorectal resection.