Nomograms and risk score models for predicting survival in rectal cancer patients with neoadjuvant therapy

Table 3 Surgical and pathological data

Variable	Primary cohort (n = 155)		Validation cohort (n = 65)
	No. of patients	%	No. of patients	%
Total number of lymph nodes
Median	16.00		17.00
Range	12.00-22.00		11.00-22.00
Positive lymph node status
Median	0.00		0.00
Range	0.00-1.00		0.00-2.00
Operating time
Median	193.00		209.00
Range	158.00-237.00		148.00-257.00
Matchmouth distance from the edge
Median	3.00		2.00
Range	0.00-4.00		1.00-4.00
Amount of bleeding during surgery
Median	50.00		50.00
Range	20.00-100.00		20.00-60.00
Joint organ cut
Yes	8	5.2	3	4.6
No	147	94.8	62	95.4
Side-side lymph node sweep
Yes	5	3.2	3	4.6
No	150	96.8	62	95.4
Preventive mouth-building
Yes	35	22.6	15	23.1
No	120	77.4	50	76.9
Retention of the left colon artery
Yes	9	5.8	6	9.2
No	146	94.2	59	90.8
Postoperative pathology
1	3	1.9	1	1.5
2	128	82.6	52	80
3	19	12.3	11	16.9
4	1	0.6	1	1.5
5	4	2.6
Cancer nodules
Yes	17	11	11	16.9
No	138	89	54	83.1
Nerve aggression
Yes	30	19.4	23	35.4
No	125	80.6	42	64.6
Vascular_tumors_bolt
Yes	17	11	9	13.8
No	138	89	56	86.2

Postoperative pathology, 1: Highly differentiated adenocarcinoma; 2: Moderately and Second differentiated adenocarcinoma; 3: Poorly and medium differentiated adenocarcinoma; 4: Signet-ring cell carcinoma; 5: mucinous adenocarcinoma.