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

Table 3 Combination of carcinoembryonic antigen, albumin supplementary to UICC^a staging system as predictors of colorectal cancer for cancer specific survival by Cox regression analysis

Parameters	Regression coefficient	Standard error	Hazard ratio (95% CI)	P value
UICC^a stage (III&IV/I&II)	1.376	0.106	3.96(3.22–4.87)	<0.001
UICC^a Stage III&IV and serum CEA^b ≥5 ng/ml	2.162	0.172	8.69(6.20–12.18)	<0.001
UICC^a Stage III&IV and serum CEA^b ≥5 ng/ml and serum albumin < 3.5 gm/dl	2.794	0.264	16.347(9.735–27.450)	<0.001

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