Differences in risk factors between patterns of recurrence in patients after curative resection for advanced gastric carcinoma

Table 2 Univariate and multivariate analyses of recurrence-free survival for peritoneal metastasis

Variables	n	Cumulative recurrence rate at 5 years (%)	Univariate P	Multivariate P relative risk (95% confidence interval)
Age (years)			0.460
<70	74	30.6
≥70	58	30.0
Sex			0.126
Male	87	23.6
Female	45	48.7
Lymphadenectomy			0.595
<D2	61	29.0
D2	71	33.0
Histological differentiation			0.022	0.041
G1 or G2	58	20.4		1
G3 or G4	74	42.3		2.22 (1.03 to 5.17)
Depth of tumor invasion			<0.001	<0.001
pT2 or pT3	64	8.0		1
pT4	68	53.6		7.05 (2.42 to 30.05)
Number of lymph node metastases			<0.001	0.001
pN0 or pN1	74	13.2		1
pN2 or pN3	58	53.7		4.02 (1.03 to 5.17)
Lymphatic invasion			0.120
Negative	45	23.1
Positive	87	36.0
Venous invasion			0.441
Negative	84	29.1
Positive	48	34.6

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