Table 4 Multivariate analyses of the overall survival in these group gastric cancer patients with peritoneal dissemination without palliative chemotherapy (Cox regression model)

 Palliative gastrectomy

 (Gastrectomy vs. without gastrectomy)^a

0.772

0.516–1.154

0.207

 Tumor size

 (<5, ≥5, and <10 vs. ≥10 cm)

1.016

0.771–1.339

0.910

 Tumor location

 (Upper, middle, and lower vs. total)

1.314

1.070–1.614

0.009

 Ascite

 (With vs. without)

0.969

0.653–1.438

0.877

 Peritoneal seeding grade

 (P1 and P2 vs. P3)

1.507

1.178–1.928

0.001

 Serum CEA Level

 (Normal vs. elevated)

1.356

0.915–2.011

0.129

 Serum CA19-9 Level

 (Normal vs. elevated)

1.384

0.943–2.031

0.097

 BMI group

 (<18.5 and 18.5–23 vs. >23)

0.871

0.654–1.161

0.346