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

Table 5 Cox regression analysis of overall survival of T4 patients with colorectal cancer

Risk factors	Univariate analysis		Multivariate analysis
	HR (95%CI)	P value	HR (95%CI)	P value
Age (years)	1.061 (1.044-1.079)	< 0.01a	1.057 (1.039-1.075)	< 0.01a
Sex (male/female)	0.848 (0.589-1.219)	0.373
BMI (kg/m2)	0.915 (0.864-0.969)	< 0.01a	0.941 (0.890-0.995)	0.034a
T2DM (yes/no)	1.139 (0.674-1.923)	0.627
Tumor location (colon/rectum)	0.845 (0.599-1.192)	0.337
Surgical history (yes/no)	1.187 (0.803-1.756)	0.390
Smoking (yes/no)	1.309 (0.928-1.847)	0.125
Drinking (yes/no)	1.096 (0.764-1.574)	0.618
Hypertension (yes/ no)	1.772 (1.240-2.531)	< 0.01a
Tumor size (≥ 5 cm/< 5 cm)	0.875 (0.620-1.234)	0.447	0.855 (0.605-1.207)	0.373
Lymph nodes	0.979 (0.955-1.003)	0.084
Overall complications (yes/no)	1.766 (1.220-2.558)	< 0.01a	1.432 (0.982-2.088)	0.062

^aP < 0.05.

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