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

Table 1 Comparison of general data of rectal cancer patients between the two groups

Clinicopathological indicators	L-TME group (n = 112)	R-TME group (n = 128)	Statistical	P value
ASA grading			χ2 = 0.006	0.997
Class I	59	68
Class II	39	44
Class III	14	16
Preoperative serum CEA	2.93 (6.06)	3.13 (4.78)	Z = -0.005	0.996
Tumor distance from anal margin (cm)	6 (6)	5 (6)	Z = -0.963	0.335
Distance distribution of tumor from anal margin			χ2 = 0.592	0.744
< 5 cm	29	34
5-10 cm	65	69
10-15 cm	18	25
Comorbidities
Diabetes	24	28	χ2 = 0.007	0.933
Dypertension	32	26	χ2 = 2.223	0.136
Chronic obstructive pulmonary disease	15	12	χ2 = 0.966	0.326
Emphysema	6	8	χ2 = 0.087	0.768
Varicose veins of the lower extremities	4	3	χ2 = 0.318	0.573
Deep vein thrombosis of the lower extremities	2	1	χ2 = 0.488	0.485
Sinus bradycardia	1	3	χ2 = 0.767	0.381
Atrial fibrillation	1	2	χ2 = 0.217	0.641
NRS2002 Score			χ2 = 1.493	0.222
0-2 points	99	106
≥ 3 points	13	22
TNM staging			χ2 = 0.138	0.933
Stage I	34	38
Stage II	42	46
Stage III	36	44
LARS			χ2 = 5.070	0.079
None	89	115
Mild	19	11
Severe	4	2
IIEF-5 score	112	128	χ2 = 7.443	0.059
Accessibility	90	118
Mild impairment	13	5
Moderate impairment	7	4
Severe impairment	2	1
Follow-up time (months)	43.5 (11.5)	42.0 (5.8)	Z = -1.593	0.111

L-TME: Laparoscopic total mesorectal resection; R-TME: Robotic total mesorectal resection; ASA: American Society of Anesthesiologists; CEA: Carcinoembryonic antigen; TNM: Tumor-node-metastasis; LARS: Low anterior rectal resection syndrome; IIEF-5: International Questionnaire on Erectile Function-5.