Table 2 Correlations between STAT1 expression and various clinicopathologic parameters in ESCC

Age

≤57

66

31

35

p = 0.337

>58

65

36

29

Gender

Male

98

49

49

p = 0.653

Female

33

18

15

Tumor site

Upper

13

8

5

p = 0.572

Middle

104

51

53

lower

14

8

6

Differentiation

Poor

12

10

2

p = 0.074

Intermediate

75

37

38

Well

44

20

22

Tumor size

>5 cm

82

48

34

p = 0.029*

<5 cm

49

19

30

Depth of invasion

T1-T2

103

48

55

p = 0.047*

T3-T4

28

19

9

Lymph metastasis

Yes

68

32

36

p = 0.286

No

63

35

27

Clinical stage

1

6

4

2

p = 0.257

2

55

30

23

3

64

32

32

4

6

1

5