Clinical features and prognosis in colorectal cancer patients with different ethnicities in Northwest China

Table 3 Significant predictive factors for cancer-specific survival in a Cox proportional-hazard analysis

Prognostic factor	Univariate HR (95%CI)	P value	Multivariate HR (95%CI)	P value
Age	0.768 (0.706-0.836)	0.000	0.828 (0.751-0.913)	0.000
Ethnicity	1.494 (1.277-1.749)	0.000	1.316 (1.107-1.565)	0.002
Tumor site	0.918 (0.852-0.988)	0.023	0.972 (0.889-1.063)	0.531
Histopathological type	0.584 (0.537-0.634)	0.000	0.479 (0.307-0.748)	0.001
Tumor differentiation	1.201 (0.976-1.479)	0.028	1.421 (1.126-1.795)	0.003
T	1.475 (1.374-1.582)	0.000	1.378 (1.268-1.498)	0.000
N	1.684 (1.561-1.817)	0.000	1.169 (1.007-1.357)	0.040
M	3.829 (3.264-4.492)	0.000	1.179 (0.895-1.554)	0.243
Staging	2.009 (1.865-2.164)	0.000	1.579 (1.418-1.798)	0.000
Postoperative metastasis	2.538 (2.260-2.850)	0.000	2.329 (1.805-3.004)	0.000
Metastatic site	1.513 (1.416-1.617)	0.000	0.837 (0.716-0.978)	0.025

T: Tumor infiltration depth; N: Number of lymph node; M: Metastasis at diagnosis.