Table 2. Univariate analysis of potential variables associated with overall survival.

Variable		Hazard radio	95% confidence interval	Log-rank P-value
Age (≥66 vs. <66 years)		0.76	0.36–1.61	0.477
Sex (male vs. female)		0.92	0.39–2.16	0.840
Siewert classification				0.757
	II vs. I	1.43	0.56–3.69
	III vs. I	1.19	0.45–3.15
	III vs. II	0.83	0.33–2.10
Clinical stage (III/IV vs. II)		1.09	0.33–3.60	0.377
Chemoradiation (yes vs. no)		0.68	030–1.53	0.355
Chemotherapy (yes vs. no)		1.46	0.69–3.10	0.322
D2 LN dissection (yes vs. no)		1.26	0.57–2.78	0.564
Surgical approach (EG vs. TG)		0.94	0.36–2.50	0.917
LN involvement (present vs. absent)		3.89	1.68–9.01	0.007
Pathologic stage (III/IV vs. I/II)		4.92	2.20–11.04	<0.001
Pathologic grade (poorly differentiated vs. moderately differentiated)		1.08	0.71–1.63	0.740
Histologic type (diffuse vs. intestinal)		2.33	1.10–4.90	0.021
Tumor regression score (partial/poor vs. near complete/complete)		3.15	1.32–7.54	0.012
Recurrence (yes vs. no)		3.19	1.35–7.53	0.005

Bold styled values indicate statistically significant.

LN = lymph node; EG = esophagogastrectomy; TG = total gastrectomy.