Log odds of positive lymph nodes as a novel prognostic predictor for gastric cancer: a systematic review and meta-analysis

Table 4 Overall survival rates according to different pN and rN classifications stratified by the LODDS staging system

	LODDS0		LODDS1		LODDS2		LODDS3		LODDS4		χ²	p^a
	No	5-YSR	No	5-YSR	No	5-YSR	No	5-YSR	No	5-YSR	χ²	p^a
pN stage
N0	2524	83.1%	1331	71.3%	216	61.8%	27	38.9%			131.606	< 0.001
N1	42	70.8%	981	68.2%	956	49.7%	429	31.5%	87	18.9%	179.709	< 0.001
N2			143	68.2%	835	52.2%	772	33.3%	326	18.6%	171.909	< 0.001
N3			8	75.0%	204	47.3%	871	29.8%	1232	14.6%	152.506	< 0.001
χ²		3.416		2.981		11.473		2.625		3.991
p^b		0.065		0.395		0.009		0.453		0.136
rN stage
rN0	2497	82.9%	1328	71.2%	214	61.4%	25	38.4%			125.64	< 0.001
rN1	39	74.7%	907	68.7%	496	49.1%	18	33.0%			60.39	< 0.001
rN2			231	67.0%	1471	51.1%	966	32.5%	30	15.4%	138.074	< 0.001
rN3							1070	30.6%	993	17.3%	50.051	< 0.001
rN4									612	12.8%	-	-
χ²		1.411		2.493		9.203		1.742		5.81
p^c		0.235		0.287		0.01		0.628		0.055

LODDS log odds of positive lymph nodes, NO. number of patients, 5-YSR 5-year survival rate
^aComparison of overall survival rates among different LODDS groups
^bComparison of overall survival rates among different pN groups
^cComparison of overall survival rates among different rN groups

ISSN: 1471-2407