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

Table 4 Cox regression analysis of overall survival of T3 patients with colorectal cancer

Risk factors	Univariate analysis		Multivariate analysis
	HR (95%CI)	P value	HR (95%CI)	P value
Age (years)	1.051 (1.031-1.070)	< 0.01a	1.047 (1.027-1.066)	< 0.01a
Sex (male/female)	0.840 (0.557-1.267)	0.405
BMI (kg/m2)	0.946 (0.890-1.006)	0.079
T2DM (yes/no)	2.040 (1.247-3.337)	< 0.01a	1.470 (0.891-2.425)	0.132
Tumor location (colon/rectum)	0.909 (0.612-1.351)	0.638
Surgical history (yes/no)	0.598 (0.340-1.021)	0.059
Smoking (yes/no)	1.177 (0.789-1.756)	0.424
Drinking (yes/no)	1.252 (0.830-1.888)	0.284
Hypertension (yes/no)	1.316 (0.849-2.040)	0.220
Tumor size (≥ 5 cm/< 5 cm)	0.969 (0.652-1.440)	0.877
Lymph nodes	0.973 (0.946-1.002)	0.067
Overall complications (yes/no)	1.777 (1.181-2.674)	< 0.01a	1.487 (0.983-2.250)	0.060

^aP < 0.05.

HR: Hazard ratio; CI: Confidence interval; BMI: Body mass index; T2DM: Type 2 diabetes mellitus.