Expression of Bmi-1 and PAI-1 in esophageal squamous cell carcinoma

Table 3 Correlation between B-cell-specific moloney leukemia virus insert site 1 expression and clinicopathological data

Characteristic	Total cases	Positive cases	Positive rate (%)	χ2	Pvalue
Differentiation degree
Moderate to high	46	38	82.6	0.963	0.411
Poor	34	25	73.5
Lymphatic metastasis
Yes	27	17	63.0	6.07	0.024
No	53	46	86.6
Sex
Male	57	47	73.5	1.627	0.234
Female	23	16	82.6
Age (yr)
< 60	34	25	87.5	0.963	0.414
≥ 60	46	38	70.0
Nationality
Han	40	35	78.8	3.66	0.099
Kazakh	40	28	78.7
Tumor size (cm)
≤ 3	33	26	92.3	0	0.613
> 3	47	37	72.2
Depth of infiltration
Muscular layer	26	24	92.3	4.231	0.0451
Tunica externa	54	39	72.2
Pathological type
Ulcerative	37	27	73.0	0.885	0.829
Fungating	11	10	90.9
Medullary	26	21	80.7
Constrictive	6	5	83.3