Prognostic relevance of β-catenin expression in T2-3N0M0 esophageal squamous cell carcinoma

Table 2 β-catenin expression in esophageal squamous cell carcinoma patients n (%)

Parameters of ESCC patients	n	Expression of β-catenin		P-value
		Low	High
Sex
Male	165	57 (34.5)	108 (65.5)	0.354
Female	62	26 (41.9)	36 (58.1)
Age (yr)
≤ 60	138	49 (35.5)	89 (64.5)	0.778
> 60	89	34 (38.2)	55 (61.8)
Tumor size (cm)
≤ 5.0	155	54 (34.8)	101 (65.2)	0.461
> 5.0	72	29 (40.3)	43 (59.7)
Tumor grade
Grade 1	57	17 (29.8)	40 (70.2)
Grade 2	114	44 (38.6)	70 (61.4)	0.473
Grade 3	56	22 (39.3)	34 (60.7)
Tumor location
Upper	25	11 (44.0)	14 (56.0)
Middle	152	52 (34.2)	100 (65.8)	0.545
Lower	50	20 (40.0)	30 (60.0)
Depth of invasion
T2	88	34 (38.6)	54 (61.4)	0.672
T3	139	49 (35.3)	90 (64.7)
AJCC staging system (7th ed)
IB	12	3 (25.0)	9 (75.0)
IIA	83	31 (37.3)	52 (62.7)	0.694
IIB	132	49 (37.1)	83 (62.9)

ESCC: Esophageal squamous cell carcinoma; AJCC: American Joint Committee on Cancer.