Table 3.

Univariate and multivariate survival analyses for evaluating the influence of the number of retrieved LNs influencing GCSS in node positive gastric cancer patients.

		Univariate analysis		Multivariate analysis
Variable	5-year GCCS	Log rank χ2 test	P	HR(95%CI)	P
Sex		3.059	0.08
Male	30.4%
Female	28.5%
Age		23.923	<0.001		<0.001
<60	32.0%			Reference
≥60	28.4%			1.295(1.221-1.373)
Race		51.463	<0.001		<0.001
White	27.6%			Reference
African American	28.2%			1.042(0.960-1.131)
Others	37.5%			0.809(0.751-0.871)
Location		72.114	<0.001		0.0251
Cardia, NOS	26.1%			Reference
Fundus of stomach	31.4%			0.827(0.700-0.978)
Body of stomach	30.5%			0.769(0.687-0.861)
Gastric antrum	32.6%			0.778(0.718-0.842)
Pylorus	29.7%			0.857(0.748-0.982)
Lesser curvature of stomach NOS	37.1%			0.693(0.625-0.768)
Greater curvature of stomach NOS	31.2%			0.812(0.707-0.931)
Overlapping lesion of stomach	23.3%			0.860(0.774-0.955)
Stomach, NOS	26.6%			0.891(0.801-0.992)
Pathological grading		98.930	<0.001		<0.001
High/ Moderate	37.9%			Reference
Poor/ Anaplastic	27.4%			1.156(1.077-1.241)
Unknown	21.7%			1.186(1.021-1.377)
Histotype		45.168	<0.001		0.060
Adenocarcinoma	32.1%			Reference
Mucinous/signet ring cell	24.0%			1.061(0.998-1.129)
pT Stage		731.610	<0.001		<0.001
T1	60.2%			Reference
T2	51.1%			1.156(0.969-1.380)
T3	31.7%			1.835(1.584-2.126)
T4	17.9%			2.604(2.246-3.019)
Tx	4.2%			4.453(3.216-6.164)
pN Stage		620.680	<0.001		<0.001
N1	42.9%			Reference
N2	32.2%			1.371(1.270-1.480)
N3a	19.7%			2.186(2.010-2.378)
N3b	9.2%			3.524(3.169-2.919)
No. of LNs		135.822	<0.001		<0.001
≤6	20.3%			Reference
7-14	29.0%			0.586(0.536-0.640)
≥15	32.6%			0.390(0.356-0.427)

NI: not included in the multivariate survival analysis.

P values were adjusted for age, race, location, pathological grading, histotype stage, tumor stage and No. of LNs as covariates.