Table 3.

Multivariate analyses in patients with ESCC

	HR (95% CI)	P-value
Tumor length (> 3 cm vs. ≤ 3 cm)	1.372 (0.991-1.900)	0.057
Vessel involvement (Positive vs. Negative)	1.056 (0.790-1.412)	0.713
Differentiation (Poor vs. Well/Moderate)	1.430 (1.065-1.919)	0.017
ABO blood group (O vs. Non-O)	1.293 (1.019-1.640)	0.034
T grade (T3-4a vs. T1-2)	1.421 (1.041-1.940)	0.027
N staging (N1-3 vs. N0)	2.453 (1.890-3.184)	< 0.001

ESCC, esophageal squamous cell carcinoma; HR, hazard ratio; CI, confidence interval.