Treatment of stage IV gastric cancer with induction chemotherapy using S-1 and cisplatin followed by curative resection in selected patients

Table 5 Results of multivariate analyses of associations between patient characteristics and survival (Cox proportional hazards model)

Variable		P
R0 surgery	(+/–)	< 0.001
Para-aortic lymph node metastasis	(negative/positive)	0.002
Age (years)	(≤59/≥ 60)	0.790
Sex	(male/female)	0.115
T stage	(T2, T3/T4)	0.936
Bulky N2	(-/+)	0.855
Peritoneal metastasis	(P0/P1)	0.358
Liver metastasis	(H0/H1)	0.125
Distant metastasis	(M0/M1)	0.913
Response (JCGC criteria)	(CR, PR/SD, PD)	0.182
Second-line chemotherapy	(+/–)	0.546

Abbreviations: CR complete response, PD progressive disease, JCGC Japanese Classification of Gastric Carcinoma, SD stable disease, PR partial response.

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