Table 4.

Efficiency of standard treatment methods, depending on stage of peritoneal carcinomatosis according to the Japanese Gastric Cancer Association

	n	1-yr survival, %	Median survival in mo	P value
P1
BSC	20	38.5	8.5	0.12
Palliative chemotherapy	6	33.3	6.7
Palliative gastrectomy	20	61.1	17
BSC	20	38.5	8.5	0.71
Palliative chemotherapy	6	33.3	6.7
BSC	20	38.5	8.5	0.032
Palliative gastrectomy	20	61.1	17
Conservative approach of BSC + palliative chemotherapy	26	37.5	7.8	0.05
Palliative gastrectomy	20	61.1	17
P2
BSC	23	11.7	5	0.56
Palliative chemotherapy	9	22.2	8.4
Palliative gastrectomy	8	37.5	7.5
P3
BSC	62	2.3	3.2	0.003
Palliative chemotherapy	36	7.8	5.6
Palliative gastrectomy	12	8.3	4.7
BSC	62	2.3	3.2	0.2
Palliative gastrectomy	12	8.3	4.7
BSC	62	2.3	3.2	0.0006
Palliative chemotherapy	36	7.8	5.6

BSC: Best supportive care.