Table 1.

Correlation between HIF-1α expression and clinicopathological characteristics in 69 oesophageal squamous cell carcinoma patients.

	HIF-1α expression level
	High (45)	Low (24)	P valuea
Gender			0.275
Male	37	17
Female	8	7
Age (years)
>68	23	11	0.676
≤68	22	13
T stage			0.015b
1	8	13
2	8	1
3	26	9
4	3	1
N stage
N0	20	8	0.023b
N1	8	12
N2	11	4
N3	6	0
Pathological stage			0.321
I	5	7
II	17	7
III	17	8
IV	6	2
Infiltrative growth (INF)			0.175
a	2	4
b	41	18
c	2	2
Lymphatic invasion			0.280
Positive	23	9
Negative	22	15
Vascular invasion			0.031b
Positive	37	14
Negative	8	10
β-catenin expression			0.003b
High	22	3
Low	23	21
TCF4/TCF7L2 expression			0.109
High	26	9
Low	19	15

^aStatistical significance is determined by the Chi-square test or Fisher’s exact test.

^bThe bold figures in the table indicate that the P value is statistically significant.