Table 1 Characteristics of the ESCC patients included in this study

Age

64 (IQR = 57 to 70)

Sex

 Male

69

 Female

25

Cigarette use^a

 Yes

58

 No

36

Alcohol use^b

 Yes

34

 No

58

T stage^c

 T2

14

 T3

72

 T4

5

N stage^c

 N0

44

 N1

38

 N2

7

 N3

3

M stage^c

 M0

90

 M1

1