Table 3.

Kaplan–Meier survival analysis and log-rank test compared in the primary site.

Characteristics		Rectum				Colon
		N	Mean OS (months)	X 2	P value	N	Mean OS (months)	X 2	P value
NLR	Low	80	51.4	6.5	0.011	96	48.1	8.5	0.004
	High	49	39.5			105	36.3
PLR	Low	71	48.5	1.4	0.234	77	48.9	7.3	0.007
	High	58	44.9			124	37.5
CEA (ng/mL)	Low	106	49.7	4.9	0.027	138	46.5	11.8	0.001
	High	23	35.4			63	32.1
CEA + NLR	Low	69	52.4	6.3	0.012	72	52.8	16.9	<0.001
	High	60	40.9			129	35.4
CEA + PLR	Low	59	50.7	3.6	0.057	58	51.2	8.7	0.003
	High	70	43.8			143	37.9
NLR + PLR	Low	59	48.4	1.9	0.164	57	53.4	13.6	<0.001
	High	70	44.8			144	37.2
CEA + NLR + PLR	Low	49	49.8	2.8	0.096	45	57.7	17.6	<0.001
	High	80	44.7			156	37.1