Preoperative serum carcinoembryonic antigen, albumin and age are supplementary to UICC staging systems in predicting survival for colorectal cancer patients undergoing surgical treatment

Table 5 Combination of carcinoembryonic antigen, age supplementary to UICC^a staging system as predictors of colorectal cancer for cancer overall survival by Cox regression analysis

Parameters	Regression coefficient	Standard error	Hazard ratio (95% CI)	P value
UICC^a stage (III&IV/I&II)	1.238	0.099	3.45(2.84–4.18)	<0.001
UICC^a Stage III&IV and serum CEA^b ≥5 ng/ml	1.979	0.157	7.23(5.31–9.85)	<0.001
UICC^a Stage III&IV and serum CEA^b ≥5 ng/ml and age ≥65 years	2.222	0.203	9.22(6.19–13.74)	<0.001

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