Table 1.

Associations of the number of retrieved lymph nodes with different clinicopathological parameters.

Factors	n	%	Total	Mean	SD	Min	Max
	45		2791	62.02	22.30	22	117
Age
⩽60	24	53.3%	1628	67.83	24.26	35	117
>60	21	46.7%	1163	55.38	18.17	22	88
Gender
Male	25	55.6%	1580	63.20	24.54	30	113
Female	20	44.4%	1211	60.55	19.67	22	117
ASA
1	30	66.7%	2016	67.20	21.78	36	117
2	12	26.7%	612	51.0	18.74	22	85
3	3	6.7%	163	54.33	30.11	30	88
NRS/Q-SGA*
A	24	53.3%	1567	65.29	22.89	35	113
B	17	37.8%	1013	59.59	21.33	22	117
C	4	8.9%	211	52.75	24.78	30	88
Tumor location
Cecum	7	15.6%	550	78.57	15.68	60	110
Ascending	6	13.3%	445	74.17	21.50	58	113
Hepatic flexure	8	17.8%	514	64.25	23.81	30	107
Transverse	2	4.4%	107	53.50	6.36	49	58
Splenic flexure	2	4.4%	86	43.00	9.90	36	50
Descending	3	6.7%	214	71.33	39.70	45	117
Sigmoid	17	37.8%	875	51.47	17.61	22	96
CEA level
Non elevated ⩽ 5ng/ml	26	57.8%	1568	60.31	21.66	22	113
Evaluated	19	42.2%	1223	64.37	23.53	33	117
pT
1	2	4.4%	80	40.00	25.46	22	58
2	21	46.7%	1396	66.48	27.02	30	117
3	18	40.0%	1034	57.44	13.03	33	81
4	4	8.9%	281	70.25	23.87	48	96
pN
No	28	62.2	1814	64.79	25.27	22	117
N1–3	17	37.8	977	57.47	15.95	30	85
AJCC 8th stage
I	20	44.4	1342	67.10	27.90	22	117
II	8	17.8	472	59.00	17.19	43	96
III	17	37.8	977	57.47	15.95	30	85
Tumor histology
High	34	75.6%	2196	64.59	24.78	22	117
Moderate	9	20.0%	476	52.89	8.85	36	64
Low	2	4.4%	119	59.50	0.71	59	60
Tumor size, the largest dimension
⩽4.5	26	57.8	1473	56.65	21.34	22	113
>4.5	19	42.2	1318	69.37	22.00	37	117
Specimen length
⩽25	17	37.8	970	57.06	20.22	22	96
>25	28	62.2	1821	65.04	23.30	30	117

^*Well nourished (SGA-A), moderately malnourished (SGA-B), or severely malnourished (SGA-C).