Table 3. Multivariate Cox regression analysis models assessing the effects of covariates on OS and DSS in CRC patients.

Variables	Overall survival		Disease specific survival
	HR (95%CI)	P	HR (95%CI)	P
XRCC1 expression (Low vs. High)	0.73 (0.50–1.06)	0.101	0.70 (0.47–1.04)	0.079
Age (≤56 vs. >56)	1.00 (0.75–1.35)	0.964	0.99 (0.72–1.35)	0.951
Tumor diameter (≤7 cm vs. >7 cm)	1.29 (0.88–1.91)	0.196	1.25 (0.81–1.92)	0.315
TNM stage (I–II vs. III–IV)	1.69 (1.17–2.44)	0.005	1.44 (0.95–2.17)	0.038

Abbreviations: HR: hazard ratio; CI: confidence interval.