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

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

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