Table 3.

Factors predicting overall survival

Variables	Univariate			Multivariate
	HR	CI (95%)	P value	HR	CI (95%)	P value
Sex	1.73	0.79–3.59	0.16
Age	1.41	0.69–2.96	0.35
Operative procedure	1.13	0.56–2.28	0.73
ECOG PS	3.01	1.08–7.22	0.04	1.78	0.54–5.40	0.33
Histology	1.12	0.55–2.30	0.76
Preoperative GOOSS	1.22	0.51–2.62	0.63
Postoperative chemotherapy	0.20	0.09–0.48	0.0007	0.16	0.06–0.49	0.0016
Postoperative complication(s)	3.68	1.50–8.62	0.0054	5.88	2.24–15.35	0.0005
Liver metastasis	2.43	0.95–5.49	0.06
Peritoneal metastasis	1.04	0.51–2.13	0.92
Direct invasion into neighboring organ(s)	1.22	0.60–2.46	0.58

CI, Confidence interval; ECOG, European Clinical Oncology Group; GOOSS, Gastric outlet obstruction scoring system; HR, Hazard ratio.