Table 4 Multivariate analysis of prognostic factors for stage III undifferentiated gastric adenocarcinoma

Type of gastrectomy

 Total/subtotal

1.345

1.130

1.602

0.001

Tumor size (cm)

 >5/≤5

1.251

1.049

1.492

0.013

LN ratio

 >0.34/≤0.34

2.262

1.892

2.704

<0.0001

Resection margins

 R1/R0

1.538

1.238

1.911

<0.001

Histology type

 PDC/MC

1.594

1.012

2.510

0.044

 SRCC/MC

1.518

0.949

2.429

0.081

Lymphatic invasion

 Yes/no

1.045

0.813

1.343

0.732

Vascular invasion

 Yes/no

0.980

0.800

1.201

0.845

Perineural invasion

 Yes/no

1.335

1.095

1.627

0.004

Chemotherapy

 No/yes

1.381

1.125

1.694

0.002