Table 3. Univariate and multivariate Cox regression models predicting depth of invasion, tumor size and 5-year survival in patients with gastric cancer.

Factor	5-year survival
	Univariate		Multivariate(T+S)†
	HR*	Predictive accuracy	HR
	P value		P value
	(95% CI#)		(95% CI)
T stage(T)	-	0.722	-
T2 vs. T1	0.305		0.396
	0.000		0.006
	(1.177–3.525)		(1.205–1.763)
T3 vs. T1	0.473		0.549
	0.007		0.044
	(2.274–4.815)		(1.307–2.983)
T4a vs. T1	0.779		0.841
s	0.010		0.037
	(1.482–4.261)		(1.514–3.376)
Tumor size(S)	1.188	0.710	1.082
	0.000		0.049
	(1.097–1.287)		(1.972–3.204)
Predictive accuracy of the model	-	-	0.764(+0.042)

^†T, T Stage; S, Tumor Size.

*HR, Hazard Ratio.

^#95%CI, 95% Confidence interval.