Table 5.

Efficiency of standard treatment methods based on peritoneal cancer index level

	n	1-year survival, %	Median survival, mo	P value
PCI 1-6
BSC	31	30.8	8.3	0.089
Palliative chemotherapy	9	33.3	6.9
Palliative gastrectomy	24	54.5	12.6
BSC	31	30.8	8.3	0.94
Palliative chemotherapy	9	33.3	6.9
BSC	31	30.8	8.3	0.045
Palliative gastrectomy	24	54.5	12.6
Conservative approach of BSC + palliative chemotherapy	40	31.5	8.0	0.03
Palliative gastrectomy	24	54.5	12.6
D0,1 lymph node dissection	18	52.9	12.6	0.91
D1+, 2 lymph node dissection	6	60.0	17.0
PCI 7-12
BSC	13	0	2.1	0.082
Palliative chemotherapy	8	0	4.3
Palliative gastrectomy	4	50.0	4.2
PCI 13+
BSC	60	2.5	3.4	0.004
Palliative chemotherapy	32	8.9	6.0
Palliative gastrectomy	12	8.3	4.7
BSC	60	2.5	3.4	0.26
Palliative gastrectomy	12	8.3	4.7
BSC	60	2.5	3.4	0.0008
Palliative chemotherapy	32	8.9	6.0

PCI: Peritoneal cancer index; BSC: Best supportive care.