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. 2013 Mar 28;19(12):1975–1983. doi: 10.3748/wjg.v19.i12.1975

Table 5.

Five-year overall survival of patients with ≤ 15 tested lymph nodes based on positive lymph nodes and log odds of positive lymph nodes staging system

		LODDS 0		LODDS 1		LODDS 2		LODDS 3		LODDS 4		χ²	P value
		n	5-YSR	n	5-YSR	n	5-YSR	n	5-YSR	n	5-YSR	χ²	P value
< 10 LN	pN 0	33	81.80%	20	70%	6	66.7.0%	-	-	-	-	1.486	0.476
	pN 1	-	-	10	50%	12	58.30%	4	0	1	0	22.349	0
	pN 2	-	-	-	-	14	42.90%	13	30.80%	2	0	4.202	0.122
	pN 3a	-	-	-	-	-	-	3	66.70%	8	37.5%	0.78	0.377
	χ²	-		1.44		0.969		5.689		1.083
	P	-		0.23		0.619		0.128		0.582
10-15 LN	pN 0	56	80.40%	-	-	-	-	-	-	-	-	-	-
	pN 1	-	-	24	62.50%	-	-	-	-	-	-	-	-
	pN 2	-	-	4	75%	23	43.50%	12	50%	-	-	1.241	0.538
	pN 3a	-	-	-	-	2	0%	19	15.80%	12	25%	3.413	0.182
	χ²	-		0.222		6.785		3.614		-
	P	-		0.638		0		0.057		-

LODDS: Log odds of positive lymph nodes; 5-YSR: 5-year survival rate; LN: Examined lymph nodes; pN: Positive lymph nodes.