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

Table 2 Univariate analysis of overall survival

Characteristic	HR	95%CI	P value
Age (yr)			0.024
< 60	1
≥ 60	1.199	1.024-1.405
Gender			0.643
Male	1
Female	0.966	0.833-1.119
Marital status			0.004
Married	1
Unmarried	1.239	1.069-1.437
Primary site			0.765
Left side colon	1
Right side colon	1.02	0.853-1.221
Rectum	1.089	0.866-1.369
Pathological grade			0.002
I-II	1
III	1.478	1.083-2.018
IV	1.849	1.307-2.614
Tumor size (cm)			< 0.001
< 2	1
2-4	1.727	1.077-2.769
≥ 4	2.433	1.557-3.802
T stage			< 0.001
T1	1
T2	0.707	0.406-1.231
T3	1.193	0.787-1.808
T4	2.839	1.875-4.300
N stage			< 0.001
N0	1
N1	2.023	1.607-2.546
N2	3.458	2.879-4.154
M stage			< 0.001
M0	1
M1	3.729	3.158-4.403
Surgery			< 0.001
Yes	1
No	0.648	0.591-0.710

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