Table 3 Intervention features of patients with 8th AJCC pathologic stage 0 and I esophageal squamous cell carcinoma

Age (years) (Mean ± standard deviation)

58.8 ± 9.4

54.3 ± 8.0

0.021*

Clinical 8th AJCC stage

0

7

3

0.0007*

I

18

62

II

0

14

III

0

2

Clinical T stage

Tis

7

4

0.0006*

T1

18

61

T2

0

16

Clinical N stage

N0

24

73

0.60

N1

1

6

N2

0

2

Tumor grade

0 (Tis)

9

4

0.0003*

1

1

7

2

15

63

3

0

7

Primary tumor location

Upper

6

15

0.11

Middle

8

45

Lower

11

21

Pathologic 8th AJCC stage

0

11

6

0.0001*

IA

0

3

IB

14

72

R0 resection

Yes

24

75

0.55

No

1

6

Synchronous H&N cancer (clinical stage) (Total: 53)

I

3

9

0.56

II

1

7

III

0

4

IV

8

21

Metachronous H&N cancer (clinical stage) (Total: 19)

I

0

4

0.51

II

1

3

III

0

0

IV

3

8

Management of H&N cancer

Operation

4

18

0.18

CCRT

6

25

CCRT + OP

3

3

RTO

1

0