Lymph node dissection does not affect the survival of patients with tumor node metastasis stages I and II colorectal cancer

Table 1 Clinical characteristics of patients with colorectal cancer

Characteristics	n (%)
Age (years)	62.8 ± 12.0
Sex
Male	1713 (60.1)
Female	1137 (39.9)
BMI (kg/m2)	22.7 ± 3.2
Smoking	1110 (38.9)
Drinking	898 (31.5)
Hypertension	745 (26.1)
T2DM	350 (12.3)
Surgical history	688 (24.1)
Tumor location
Colon	1363 (47.8)
Rectum	1487 (52.2)
T stage
1	270 (9.5)
2	596 (20.9)
3	725 (25.4)
4	1259 (44.2)
Tumor size
< 5 cm	1702 (59.7)
≥ 5 cm	1148 (40.3)
Total lymph nodes	14.9 ± 7.8
Overall complications	618 (21.7)
Follow-up (months)	38 (1-114)

T2DM: Type 2 diabetes mellitus; BMI: Body mass index.