Prognostic nomograms for predicting overall survival and cause-specific survival of signet ring cell carcinoma in colorectal cancer patients

Table 3 Multivariate Cox regression model analysis of overall survival

Characteristic	HR	95%CI	P value
Age (yr)			< 0.001
< 60	1
≥ 60	1.714	1.457-2.017
Marital status			0.007
Married	1
Unmarried	1.227	1.058-1.422
Pathological grade			0.337
I-II
III
IV
Tumor size (cm)			0.001
< 2	1
2-4	1.326	0.81-2.171
≥ 4	1.786	1.113-2.867
T stage			< 0.001
T1	1
T2	0.739	0.416-1.309
T3	0.881	0.562-1.381
T4	1.347	0.852-2.128
N stage			< 0.001
N0	1
N1	1.599	1.258-2.034
N2	2.767	2.237-3.421
M stage			< 0.001
M0	1
M1	2.092	1.732-2.527
Surgery			< 0.001
Yes	1
No	0.29	0.214-0.393

HR: Hazard ratio; CI: Confidence interval; TNM: Tumor-node-metastasis.