Constructing a nomogram to predict overall survival of colon cancer based on computed tomography characteristics and clinicopathological factors

Table 2 Univariate and multivariate analyses of overall survival in the training set

Variable	Univariate analysis			Multivariate analysis
	HR	95%CI	P value	HR	95%CI	P value
Sex
Female	0.911	0.448-1.853	0.796
Age (years)	1.070	0.879-1.303	0.498
Tumor_location
Transverse colon	0.929	0.274-3.155	0.906
Descending colon	0.931	0.274-3.162	0.909
Sigmoid colon	0.638	0.286-1.421	0.271
Length	1.035	0.924-1.160	0.556
rT	3.428	1.690-6.954	< 0.001b
Thickness	1.124	0.943-1.341	0.191
ctLNM
(+)	4.165	2.082-8.333	< 0.001b	3.439	1.698-6.963	< 0.001b
ctEMVI
(+)	3.541	1.684-7.446	< 0.001b
pT	2.702	1.454-5.021	0.002a
pN	3.016	1.975-4.606	< 0.001b
MLN_number	2.106	1.583-2.802	< 0.001b
MLN_partition	1.738	1.267-2.385	< 0.001b
LVI
(+)	2.204	1.113-4.366	0.023a
Vessel
(+)	2.251	1.136-4.459	0.020a
Perineural
(+)	5.224	2.619-10.420	< 0.001b	4.341	2.129-8.849	< 0.001b
Tumor classification	0.466	0.323-0.671	< 0.001b	0.450	0.300-0.675	< 0.001b
N	0.936	0.869-1.008
A	0.978	0.950-1.006
V	1.005	0.978-1.033
AER	0.637	0.199-2.041
VER	2.601	0.946-7.152

^aP < 0.05.

^bP < 0.001.

HR: Hazard ratio; CI: Confidence interval; N: Tumor unenhanced value; A: Tumor arterial value; V: Tumor venous value; AER: Arterial enhancement rate; VER: Venous enhancement rate; ctLNM: Whether lymph nodes are metastatic on imaging; ctEMVI: Detection of extramural venous invasion on computed tomography scan.